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Finding the Fourth Proportional to 956.13, 1,434.26 and 868.11

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Solution

The fourth proportional to 956.13, 1,434.26 and 868.11 is: 1,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.13 : 1,434.26 = 868.11 : x
  2. Step 2: Convert to fraction form
    956.13/1,434.26 = 868.11/x
  3. Step 3: Cross multiply
    956.13x = 1,434.26 × 868.11
  4. Step 4: Simplify right side
    956.13x = 1,245,095.45
  5. Step 5: Solve for x
    x = 1,245,095.45/956.13
  6. Step 6: Final answer
    x = 1,302.22

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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.