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Finding the Fourth Proportional to 616.60, 850.66 and 395.52

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Solution

The fourth proportional to 616.60, 850.66 and 395.52 is: 545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.60 : 850.66 = 395.52 : x
  2. Step 2: Convert to fraction form
    616.60/850.66 = 395.52/x
  3. Step 3: Cross multiply
    616.60x = 850.66 × 395.52
  4. Step 4: Simplify right side
    616.60x = 336,453.04
  5. Step 5: Solve for x
    x = 336,453.04/616.60
  6. Step 6: Final answer
    x = 545.66

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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.