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Finding the Fourth Proportional to 1,154.49, 1,734.70 and 960.09

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Solution

The fourth proportional to 1,154.49, 1,734.70 and 960.09 is: 1,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.49 : 1,734.70 = 960.09 : x
  2. Step 2: Convert to fraction form
    1,154.49/1,734.70 = 960.09/x
  3. Step 3: Cross multiply
    1,154.49x = 1,734.70 × 960.09
  4. Step 4: Simplify right side
    1,154.49x = 1,665,468.12
  5. Step 5: Solve for x
    x = 1,665,468.12/1,154.49
  6. Step 6: Final answer
    x = 1,442.60

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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.