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Finding the Fourth Proportional to 1,134.29, 1,564.36 and 958.11

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Solution

The fourth proportional to 1,134.29, 1,564.36 and 958.11 is: 1,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.29 : 1,564.36 = 958.11 : x
  2. Step 2: Convert to fraction form
    1,134.29/1,564.36 = 958.11/x
  3. Step 3: Cross multiply
    1,134.29x = 1,564.36 × 958.11
  4. Step 4: Simplify right side
    1,134.29x = 1,498,824.17
  5. Step 5: Solve for x
    x = 1,498,824.17/1,134.29
  6. Step 6: Final answer
    x = 1,321.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.