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Finding the Fourth Proportional to 616.56, 925.19 and 205.83

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Solution

The fourth proportional to 616.56, 925.19 and 205.83 is: 308.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.56 : 925.19 = 205.83 : x
  2. Step 2: Convert to fraction form
    616.56/925.19 = 205.83/x
  3. Step 3: Cross multiply
    616.56x = 925.19 × 205.83
  4. Step 4: Simplify right side
    616.56x = 190,430.83
  5. Step 5: Solve for x
    x = 190,430.83/616.56
  6. Step 6: Final answer
    x = 308.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.