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Finding the Fourth Proportional to 546.92, 820.40 and 410.70

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Solution

The fourth proportional to 546.92, 820.40 and 410.70 is: 616.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.92 : 820.40 = 410.70 : x
  2. Step 2: Convert to fraction form
    546.92/820.40 = 410.70/x
  3. Step 3: Cross multiply
    546.92x = 820.40 × 410.70
  4. Step 4: Simplify right side
    546.92x = 336,938.28
  5. Step 5: Solve for x
    x = 336,938.28/546.92
  6. Step 6: Final answer
    x = 616.07

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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.