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Finding the Fourth Proportional to 417.95, 576.98 and 324.49

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Solution

The fourth proportional to 417.95, 576.98 and 324.49 is: 447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.95 : 576.98 = 324.49 : x
  2. Step 2: Convert to fraction form
    417.95/576.98 = 324.49/x
  3. Step 3: Cross multiply
    417.95x = 576.98 × 324.49
  4. Step 4: Simplify right side
    417.95x = 187,221.18
  5. Step 5: Solve for x
    x = 187,221.18/417.95
  6. Step 6: Final answer
    x = 447.95

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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.