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Finding the Fourth Proportional to 476.62, 714.98 and 147.55

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Solution

The fourth proportional to 476.62, 714.98 and 147.55 is: 221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.62 : 714.98 = 147.55 : x
  2. Step 2: Convert to fraction form
    476.62/714.98 = 147.55/x
  3. Step 3: Cross multiply
    476.62x = 714.98 × 147.55
  4. Step 4: Simplify right side
    476.62x = 105,491.72
  5. Step 5: Solve for x
    x = 105,491.72/476.62
  6. Step 6: Final answer
    x = 221.33

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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.