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Finding the Fourth Proportional to 958.17, 1,323.26 and 825.13

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Solution

The fourth proportional to 958.17, 1,323.26 and 825.13 is: 1,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.17 : 1,323.26 = 825.13 : x
  2. Step 2: Convert to fraction form
    958.17/1,323.26 = 825.13/x
  3. Step 3: Cross multiply
    958.17x = 1,323.26 × 825.13
  4. Step 4: Simplify right side
    958.17x = 1,091,860.28
  5. Step 5: Solve for x
    x = 1,091,860.28/958.17
  6. Step 6: Final answer
    x = 1,139.53

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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.