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Finding the Fourth Proportional to 352.64, 531.18 and 331.04

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Solution

The fourth proportional to 352.64, 531.18 and 331.04 is: 498.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.64 : 531.18 = 331.04 : x
  2. Step 2: Convert to fraction form
    352.64/531.18 = 331.04/x
  3. Step 3: Cross multiply
    352.64x = 531.18 × 331.04
  4. Step 4: Simplify right side
    352.64x = 175,841.83
  5. Step 5: Solve for x
    x = 175,841.83/352.64
  6. Step 6: Final answer
    x = 498.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.