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Finding the Fourth Proportional to 616.25, 850.20 and 395.32

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Solution

The fourth proportional to 616.25, 850.20 and 395.32 is: 545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.25 : 850.20 = 395.32 : x
  2. Step 2: Convert to fraction form
    616.25/850.20 = 395.32/x
  3. Step 3: Cross multiply
    616.25x = 850.20 × 395.32
  4. Step 4: Simplify right side
    616.25x = 336,098.20
  5. Step 5: Solve for x
    x = 336,098.20/616.25
  6. Step 6: Final answer
    x = 545.40

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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.