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Finding the Fourth Proportional to 315.62, 473.43 and 308.19

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Solution

The fourth proportional to 315.62, 473.43 and 308.19 is: 462.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.62 : 473.43 = 308.19 : x
  2. Step 2: Convert to fraction form
    315.62/473.43 = 308.19/x
  3. Step 3: Cross multiply
    315.62x = 473.43 × 308.19
  4. Step 4: Simplify right side
    315.62x = 145,906.39
  5. Step 5: Solve for x
    x = 145,906.39/315.62
  6. Step 6: Final answer
    x = 462.29

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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.