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Finding the Fourth Proportional to 1,481.04, 2,221.56 and 711

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Solution

The fourth proportional to 1,481.04, 2,221.56 and 711 is: 1,066.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.04 : 2,221.56 = 711 : x
  2. Step 2: Convert to fraction form
    1,481.04/2,221.56 = 711/x
  3. Step 3: Cross multiply
    1,481.04x = 2,221.56 × 711
  4. Step 4: Simplify right side
    1,481.04x = 1,579,529.16
  5. Step 5: Solve for x
    x = 1,579,529.16/1,481.04
  6. Step 6: Final answer
    x = 1,066.50

Related Problems

Find fourth proportional to 740.52, 1,110.78 and 355.50
Half scale
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Double scale
Find fourth proportional to 1,482.04, 2,223.06 and 712
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.