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Finding the Fourth Proportional to 616.81, 925.35 and 205.93

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Solution

The fourth proportional to 616.81, 925.35 and 205.93 is: 308.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.81 : 925.35 = 205.93 : x
  2. Step 2: Convert to fraction form
    616.81/925.35 = 205.93/x
  3. Step 3: Cross multiply
    616.81x = 925.35 × 205.93
  4. Step 4: Simplify right side
    616.81x = 190,557.33
  5. Step 5: Solve for x
    x = 190,557.33/616.81
  6. Step 6: Final answer
    x = 308.94

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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.