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Finding the Fourth Proportional to 734.31, 1,101.66 and 653.70

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Solution

The fourth proportional to 734.31, 1,101.66 and 653.70 is: 980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    734.31 : 1,101.66 = 653.70 : x
  2. Step 2: Convert to fraction form
    734.31/1,101.66 = 653.70/x
  3. Step 3: Cross multiply
    734.31x = 1,101.66 × 653.70
  4. Step 4: Simplify right side
    734.31x = 720,155.14
  5. Step 5: Solve for x
    x = 720,155.14/734.31
  6. Step 6: Final answer
    x = 980.72

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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.