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Finding the Fourth Proportional to 731.39, 1,096.28 and 365.68

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Solution

The fourth proportional to 731.39, 1,096.28 and 365.68 is: 548.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.39 : 1,096.28 = 365.68 : x
  2. Step 2: Convert to fraction form
    731.39/1,096.28 = 365.68/x
  3. Step 3: Cross multiply
    731.39x = 1,096.28 × 365.68
  4. Step 4: Simplify right side
    731.39x = 400,880.36
  5. Step 5: Solve for x
    x = 400,880.36/731.39
  6. Step 6: Final answer
    x = 548.11

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1.5x scale

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.