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Finding the Fourth Proportional to 616.38, 850.61 and 354.38

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Solution

The fourth proportional to 616.38, 850.61 and 354.38 is: 489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.38 : 850.61 = 354.38 : x
  2. Step 2: Convert to fraction form
    616.38/850.61 = 354.38/x
  3. Step 3: Cross multiply
    616.38x = 850.61 × 354.38
  4. Step 4: Simplify right side
    616.38x = 301,439.17
  5. Step 5: Solve for x
    x = 301,439.17/616.38
  6. Step 6: Final answer
    x = 489.05

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1.5x scale

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.