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Finding the Fourth Proportional to 500.58, 750.89 and 281.19

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Solution

The fourth proportional to 500.58, 750.89 and 281.19 is: 421.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.58 : 750.89 = 281.19 : x
  2. Step 2: Convert to fraction form
    500.58/750.89 = 281.19/x
  3. Step 3: Cross multiply
    500.58x = 750.89 × 281.19
  4. Step 4: Simplify right side
    500.58x = 211,141.35
  5. Step 5: Solve for x
    x = 211,141.35/500.58
  6. Step 6: Final answer
    x = 421.79

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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.