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Finding the Fourth Proportional to 475.57, 656.14 and 279.08

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Solution

The fourth proportional to 475.57, 656.14 and 279.08 is: 385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.57 : 656.14 = 279.08 : x
  2. Step 2: Convert to fraction form
    475.57/656.14 = 279.08/x
  3. Step 3: Cross multiply
    475.57x = 656.14 × 279.08
  4. Step 4: Simplify right side
    475.57x = 183,115.55
  5. Step 5: Solve for x
    x = 183,115.55/475.57
  6. Step 6: Final answer
    x = 385.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.