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Finding the Fourth Proportional to 718.97, 1,076.73 and 444.22

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Solution

The fourth proportional to 718.97, 1,076.73 and 444.22 is: 665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.97 : 1,076.73 = 444.22 : x
  2. Step 2: Convert to fraction form
    718.97/1,076.73 = 444.22/x
  3. Step 3: Cross multiply
    718.97x = 1,076.73 × 444.22
  4. Step 4: Simplify right side
    718.97x = 478,306.35
  5. Step 5: Solve for x
    x = 478,306.35/718.97
  6. Step 6: Final answer
    x = 665.27

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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.