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Finding the Fourth Proportional to 734.38, 1,101.57 and 247.47

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Solution

The fourth proportional to 734.38, 1,101.57 and 247.47 is: 371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.38 : 1,101.57 = 247.47 : x
  2. Step 2: Convert to fraction form
    734.38/1,101.57 = 247.47/x
  3. Step 3: Cross multiply
    734.38x = 1,101.57 × 247.47
  4. Step 4: Simplify right side
    734.38x = 272,605.53
  5. Step 5: Solve for x
    x = 272,605.53/734.38
  6. Step 6: Final answer
    x = 371.21

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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.