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Finding the Fourth Proportional to 315.29, 472.80 and 232.53

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Solution

The fourth proportional to 315.29, 472.80 and 232.53 is: 348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.29 : 472.80 = 232.53 : x
  2. Step 2: Convert to fraction form
    315.29/472.80 = 232.53/x
  3. Step 3: Cross multiply
    315.29x = 472.80 × 232.53
  4. Step 4: Simplify right side
    315.29x = 109,939.28
  5. Step 5: Solve for x
    x = 109,939.28/315.29
  6. Step 6: Final answer
    x = 348.69

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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.