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Finding the Fourth Proportional to 915.33, 1,264.83 and 652.89

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Solution

The fourth proportional to 915.33, 1,264.83 and 652.89 is: 902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    915.33 : 1,264.83 = 652.89 : x
  2. Step 2: Convert to fraction form
    915.33/1,264.83 = 652.89/x
  3. Step 3: Cross multiply
    915.33x = 1,264.83 × 652.89
  4. Step 4: Simplify right side
    915.33x = 825,794.86
  5. Step 5: Solve for x
    x = 825,794.86/915.33
  6. Step 6: Final answer
    x = 902.18

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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.