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Finding the Fourth Proportional to 1,480.17, 2,220.26 and 1,191

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Solution

The fourth proportional to 1,480.17, 2,220.26 and 1,191 is: 1,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.17 : 2,220.26 = 1,191 : x
  2. Step 2: Convert to fraction form
    1,480.17/2,220.26 = 1,191/x
  3. Step 3: Cross multiply
    1,480.17x = 2,220.26 × 1,191
  4. Step 4: Simplify right side
    1,480.17x = 2,644,323.71
  5. Step 5: Solve for x
    x = 2,644,323.71/1,480.17
  6. Step 6: Final answer
    x = 1,786.50

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Double scale
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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.