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Finding the Fourth Proportional to 476.28, 714.70 and 354.86

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Solution

The fourth proportional to 476.28, 714.70 and 354.86 is: 532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.28 : 714.70 = 354.86 : x
  2. Step 2: Convert to fraction form
    476.28/714.70 = 354.86/x
  3. Step 3: Cross multiply
    476.28x = 714.70 × 354.86
  4. Step 4: Simplify right side
    476.28x = 253,618.44
  5. Step 5: Solve for x
    x = 253,618.44/476.28
  6. Step 6: Final answer
    x = 532.50

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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.