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Finding the Fourth Proportional to 616.31, 850.80 and 354.27

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Solution

The fourth proportional to 616.31, 850.80 and 354.27 is: 489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.31 : 850.80 = 354.27 : x
  2. Step 2: Convert to fraction form
    616.31/850.80 = 354.27/x
  3. Step 3: Cross multiply
    616.31x = 850.80 × 354.27
  4. Step 4: Simplify right side
    616.31x = 301,412.92
  5. Step 5: Solve for x
    x = 301,412.92/616.31
  6. Step 6: Final answer
    x = 489.06

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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.