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Finding the Fourth Proportional to 901.72, 1,353.24 and 671.14

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Solution

The fourth proportional to 901.72, 1,353.24 and 671.14 is: 1,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.72 : 1,353.24 = 671.14 : x
  2. Step 2: Convert to fraction form
    901.72/1,353.24 = 671.14/x
  3. Step 3: Cross multiply
    901.72x = 1,353.24 × 671.14
  4. Step 4: Simplify right side
    901.72x = 908,213.49
  5. Step 5: Solve for x
    x = 908,213.49/901.72
  6. Step 6: Final answer
    x = 1,007.20

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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.