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Finding the Fourth Proportional to 727.91, 999.17 and 662.30

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Solution

The fourth proportional to 727.91, 999.17 and 662.30 is: 909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.91 : 999.17 = 662.30 : x
  2. Step 2: Convert to fraction form
    727.91/999.17 = 662.30/x
  3. Step 3: Cross multiply
    727.91x = 999.17 × 662.30
  4. Step 4: Simplify right side
    727.91x = 661,750.29
  5. Step 5: Solve for x
    x = 661,750.29/727.91
  6. Step 6: Final answer
    x = 909.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.