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Finding the Fourth Proportional to 750.43, 1,123.55 and 503.29

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Solution

The fourth proportional to 750.43, 1,123.55 and 503.29 is: 753.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.43 : 1,123.55 = 503.29 : x
  2. Step 2: Convert to fraction form
    750.43/1,123.55 = 503.29/x
  3. Step 3: Cross multiply
    750.43x = 1,123.55 × 503.29
  4. Step 4: Simplify right side
    750.43x = 565,471.48
  5. Step 5: Solve for x
    x = 565,471.48/750.43
  6. Step 6: Final answer
    x = 753.53

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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.