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Finding the Fourth Proportional to 500.27, 750.89 and 418.53

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Solution

The fourth proportional to 500.27, 750.89 and 418.53 is: 628.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.27 : 750.89 = 418.53 : x
  2. Step 2: Convert to fraction form
    500.27/750.89 = 418.53/x
  3. Step 3: Cross multiply
    500.27x = 750.89 × 418.53
  4. Step 4: Simplify right side
    500.27x = 314,269.99
  5. Step 5: Solve for x
    x = 314,269.99/500.27
  6. Step 6: Final answer
    x = 628.20

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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.