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Finding the Fourth Proportional to 616.68, 850.56 and 395.16

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Solution

The fourth proportional to 616.68, 850.56 and 395.16 is: 545.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.68 : 850.56 = 395.16 : x
  2. Step 2: Convert to fraction form
    616.68/850.56 = 395.16/x
  3. Step 3: Cross multiply
    616.68x = 850.56 × 395.16
  4. Step 4: Simplify right side
    616.68x = 336,107.29
  5. Step 5: Solve for x
    x = 336,107.29/616.68
  6. Step 6: Final answer
    x = 545.03

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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.