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Finding the Fourth Proportional to 773.98, 1,160.49 and 484.78

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Solution

The fourth proportional to 773.98, 1,160.49 and 484.78 is: 726.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.98 : 1,160.49 = 484.78 : x
  2. Step 2: Convert to fraction form
    773.98/1,160.49 = 484.78/x
  3. Step 3: Cross multiply
    773.98x = 1,160.49 × 484.78
  4. Step 4: Simplify right side
    773.98x = 562,582.34
  5. Step 5: Solve for x
    x = 562,582.34/773.98
  6. Step 6: Final answer
    x = 726.87

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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.