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Finding the Fourth Proportional to 475.57, 656.39 and 382.93

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Solution

The fourth proportional to 475.57, 656.39 and 382.93 is: 528.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.57 : 656.39 = 382.93 : x
  2. Step 2: Convert to fraction form
    475.57/656.39 = 382.93/x
  3. Step 3: Cross multiply
    475.57x = 656.39 × 382.93
  4. Step 4: Simplify right side
    475.57x = 251,351.42
  5. Step 5: Solve for x
    x = 251,351.42/475.57
  6. Step 6: Final answer
    x = 528.53

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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.