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Finding the Fourth Proportional to 417.52, 576.18 and 231.02

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Solution

The fourth proportional to 417.52, 576.18 and 231.02 is: 318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.52 : 576.18 = 231.02 : x
  2. Step 2: Convert to fraction form
    417.52/576.18 = 231.02/x
  3. Step 3: Cross multiply
    417.52x = 576.18 × 231.02
  4. Step 4: Simplify right side
    417.52x = 133,108.38
  5. Step 5: Solve for x
    x = 133,108.38/417.52
  6. Step 6: Final answer
    x = 318.81

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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.