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Finding the Fourth Proportional to 610.75, 916.13 and 268.75

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Solution

The fourth proportional to 610.75, 916.13 and 268.75 is: 403.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.75 : 916.13 = 268.75 : x
  2. Step 2: Convert to fraction form
    610.75/916.13 = 268.75/x
  3. Step 3: Cross multiply
    610.75x = 916.13 × 268.75
  4. Step 4: Simplify right side
    610.75x = 246,209.94
  5. Step 5: Solve for x
    x = 246,209.94/610.75
  6. Step 6: Final answer
    x = 403.13

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Similar ratio
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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.