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Finding the Fourth Proportional to 887.72, 1,224.62 and 754.40

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Solution

The fourth proportional to 887.72, 1,224.62 and 754.40 is: 1,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.72 : 1,224.62 = 754.40 : x
  2. Step 2: Convert to fraction form
    887.72/1,224.62 = 754.40/x
  3. Step 3: Cross multiply
    887.72x = 1,224.62 × 754.40
  4. Step 4: Simplify right side
    887.72x = 923,853.33
  5. Step 5: Solve for x
    x = 923,853.33/887.72
  6. Step 6: Final answer
    x = 1,040.70

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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.