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Finding the Fourth Proportional to 757.59, 1,042.76 and 536.15

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Solution

The fourth proportional to 757.59, 1,042.76 and 536.15 is: 737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.59 : 1,042.76 = 536.15 : x
  2. Step 2: Convert to fraction form
    757.59/1,042.76 = 536.15/x
  3. Step 3: Cross multiply
    757.59x = 1,042.76 × 536.15
  4. Step 4: Simplify right side
    757.59x = 559,074.43
  5. Step 5: Solve for x
    x = 559,074.43/757.59
  6. Step 6: Final answer
    x = 737.97

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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.