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Finding the Fourth Proportional to 727.18, 1,091.46 and 483.88

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Solution

The fourth proportional to 727.18, 1,091.46 and 483.88 is: 726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.18 : 1,091.46 = 483.88 : x
  2. Step 2: Convert to fraction form
    727.18/1,091.46 = 483.88/x
  3. Step 3: Cross multiply
    727.18x = 1,091.46 × 483.88
  4. Step 4: Simplify right side
    727.18x = 528,132.54
  5. Step 5: Solve for x
    x = 528,132.54/727.18
  6. Step 6: Final answer
    x = 726.27

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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.