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Finding the Fourth Proportional to 1,101.57, 1,649.29 and 754.17

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Solution

The fourth proportional to 1,101.57, 1,649.29 and 754.17 is: 1,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.57 : 1,649.29 = 754.17 : x
  2. Step 2: Convert to fraction form
    1,101.57/1,649.29 = 754.17/x
  3. Step 3: Cross multiply
    1,101.57x = 1,649.29 × 754.17
  4. Step 4: Simplify right side
    1,101.57x = 1,243,845.04
  5. Step 5: Solve for x
    x = 1,243,845.04/1,101.57
  6. Step 6: Final answer
    x = 1,129.16

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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.