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Finding the Fourth Proportional to 731.56, 1,096.80 and 653.80

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Solution

The fourth proportional to 731.56, 1,096.80 and 653.80 is: 980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.56 : 1,096.80 = 653.80 : x
  2. Step 2: Convert to fraction form
    731.56/1,096.80 = 653.80/x
  3. Step 3: Cross multiply
    731.56x = 1,096.80 × 653.80
  4. Step 4: Simplify right side
    731.56x = 717,087.84
  5. Step 5: Solve for x
    x = 717,087.84/731.56
  6. Step 6: Final answer
    x = 980.22

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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.