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Finding the Fourth Proportional to 493.85, 740.68 and 147.17

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Solution

The fourth proportional to 493.85, 740.68 and 147.17 is: 220.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.85 : 740.68 = 147.17 : x
  2. Step 2: Convert to fraction form
    493.85/740.68 = 147.17/x
  3. Step 3: Cross multiply
    493.85x = 740.68 × 147.17
  4. Step 4: Simplify right side
    493.85x = 109,007.36
  5. Step 5: Solve for x
    x = 109,007.36/493.85
  6. Step 6: Final answer
    x = 220.73

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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.