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Finding the Fourth Proportional to 731.32, 1,096.34 and 275.64

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Solution

The fourth proportional to 731.32, 1,096.34 and 275.64 is: 413.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.32 : 1,096.34 = 275.64 : x
  2. Step 2: Convert to fraction form
    731.32/1,096.34 = 275.64/x
  3. Step 3: Cross multiply
    731.32x = 1,096.34 × 275.64
  4. Step 4: Simplify right side
    731.32x = 302,195.16
  5. Step 5: Solve for x
    x = 302,195.16/731.32
  6. Step 6: Final answer
    x = 413.22

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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.