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Finding the Fourth Proportional to 915.00, 1,262.39 and 560.82

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Solution

The fourth proportional to 915.00, 1,262.39 and 560.82 is: 773.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.00 : 1,262.39 = 560.82 : x
  2. Step 2: Convert to fraction form
    915.00/1,262.39 = 560.82/x
  3. Step 3: Cross multiply
    915.00x = 1,262.39 × 560.82
  4. Step 4: Simplify right side
    915.00x = 707,975.49
  5. Step 5: Solve for x
    x = 707,975.49/915.00
  6. Step 6: Final answer
    x = 773.75

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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.