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Finding the Fourth Proportional to 717.86, 1,077.12 and 352.44

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Solution

The fourth proportional to 717.86, 1,077.12 and 352.44 is: 528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.86 : 1,077.12 = 352.44 : x
  2. Step 2: Convert to fraction form
    717.86/1,077.12 = 352.44/x
  3. Step 3: Cross multiply
    717.86x = 1,077.12 × 352.44
  4. Step 4: Simplify right side
    717.86x = 379,620.17
  5. Step 5: Solve for x
    x = 379,620.17/717.86
  6. Step 6: Final answer
    x = 528.82

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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.