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Finding the Fourth Proportional to 315.32, 473.08 and 132.62

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Solution

The fourth proportional to 315.32, 473.08 and 132.62 is: 198.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.32 : 473.08 = 132.62 : x
  2. Step 2: Convert to fraction form
    315.32/473.08 = 132.62/x
  3. Step 3: Cross multiply
    315.32x = 473.08 × 132.62
  4. Step 4: Simplify right side
    315.32x = 62,739.87
  5. Step 5: Solve for x
    x = 62,739.87/315.32
  6. Step 6: Final answer
    x = 198.97

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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.