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Finding the Fourth Proportional to 500.60, 750.90 and 135.42

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Solution

The fourth proportional to 500.60, 750.90 and 135.42 is: 203.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.60 : 750.90 = 135.42 : x
  2. Step 2: Convert to fraction form
    500.60/750.90 = 135.42/x
  3. Step 3: Cross multiply
    500.60x = 750.90 × 135.42
  4. Step 4: Simplify right side
    500.60x = 101,686.88
  5. Step 5: Solve for x
    x = 101,686.88/500.60
  6. Step 6: Final answer
    x = 203.13

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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.