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Finding the Fourth Proportional to 476.64, 714.79 and 168.43

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Solution

The fourth proportional to 476.64, 714.79 and 168.43 is: 252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.64 : 714.79 = 168.43 : x
  2. Step 2: Convert to fraction form
    476.64/714.79 = 168.43/x
  3. Step 3: Cross multiply
    476.64x = 714.79 × 168.43
  4. Step 4: Simplify right side
    476.64x = 120,392.08
  5. Step 5: Solve for x
    x = 120,392.08/476.64
  6. Step 6: Final answer
    x = 252.58

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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.