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Finding the Fourth Proportional to 728.82, 1,094.25 and 454.11

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Solution

The fourth proportional to 728.82, 1,094.25 and 454.11 is: 681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.82 : 1,094.25 = 454.11 : x
  2. Step 2: Convert to fraction form
    728.82/1,094.25 = 454.11/x
  3. Step 3: Cross multiply
    728.82x = 1,094.25 × 454.11
  4. Step 4: Simplify right side
    728.82x = 496,909.87
  5. Step 5: Solve for x
    x = 496,909.87/728.82
  6. Step 6: Final answer
    x = 681.80

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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.