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Finding the Fourth Proportional to 848.70, 1,171.26 and 554.76

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Solution

The fourth proportional to 848.70, 1,171.26 and 554.76 is: 765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.70 : 1,171.26 = 554.76 : x
  2. Step 2: Convert to fraction form
    848.70/1,171.26 = 554.76/x
  3. Step 3: Cross multiply
    848.70x = 1,171.26 × 554.76
  4. Step 4: Simplify right side
    848.70x = 649,768.20
  5. Step 5: Solve for x
    x = 649,768.20/848.70
  6. Step 6: Final answer
    x = 765.60

Related Problems

Find fourth proportional to 424.35, 585.63 and 277.38
Half scale
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Double scale
Find fourth proportional to 849.70, 1,172.64 and 555.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.