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Finding the Fourth Proportional to 863.48, 1,294.30 and 741.38

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Solution

The fourth proportional to 863.48, 1,294.30 and 741.38 is: 1,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.48 : 1,294.30 = 741.38 : x
  2. Step 2: Convert to fraction form
    863.48/1,294.30 = 741.38/x
  3. Step 3: Cross multiply
    863.48x = 1,294.30 × 741.38
  4. Step 4: Simplify right side
    863.48x = 959,568.13
  5. Step 5: Solve for x
    x = 959,568.13/863.48
  6. Step 6: Final answer
    x = 1,111.28

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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.