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Finding the Fourth Proportional to 680.02, 937.95 and 418.18

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Solution

The fourth proportional to 680.02, 937.95 and 418.18 is: 576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.02 : 937.95 = 418.18 : x
  2. Step 2: Convert to fraction form
    680.02/937.95 = 418.18/x
  3. Step 3: Cross multiply
    680.02x = 937.95 × 418.18
  4. Step 4: Simplify right side
    680.02x = 392,231.93
  5. Step 5: Solve for x
    x = 392,231.93/680.02
  6. Step 6: Final answer
    x = 576.79

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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.