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Finding the Fourth Proportional to 500.86, 751.20 and 135.64

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Solution

The fourth proportional to 500.86, 751.20 and 135.64 is: 203.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.86 : 751.20 = 135.64 : x
  2. Step 2: Convert to fraction form
    500.86/751.20 = 135.64/x
  3. Step 3: Cross multiply
    500.86x = 751.20 × 135.64
  4. Step 4: Simplify right side
    500.86x = 101,892.77
  5. Step 5: Solve for x
    x = 101,892.77/500.86
  6. Step 6: Final answer
    x = 203.44

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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.