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Finding the Fourth Proportional to 337.76, 506.28 and 145.40

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Solution

The fourth proportional to 337.76, 506.28 and 145.40 is: 217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.76 : 506.28 = 145.40 : x
  2. Step 2: Convert to fraction form
    337.76/506.28 = 145.40/x
  3. Step 3: Cross multiply
    337.76x = 506.28 × 145.40
  4. Step 4: Simplify right side
    337.76x = 73,613.11
  5. Step 5: Solve for x
    x = 73,613.11/337.76
  6. Step 6: Final answer
    x = 217.95

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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.