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Finding the Fourth Proportional to 500.55, 750.79 and 153.87

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Solution

The fourth proportional to 500.55, 750.79 and 153.87 is: 230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.55 : 750.79 = 153.87 : x
  2. Step 2: Convert to fraction form
    500.55/750.79 = 153.87/x
  3. Step 3: Cross multiply
    500.55x = 750.79 × 153.87
  4. Step 4: Simplify right side
    500.55x = 115,524.06
  5. Step 5: Solve for x
    x = 115,524.06/500.55
  6. Step 6: Final answer
    x = 230.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.