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Finding the Fourth Proportional to 883.28, 1,327.08 and 740.72

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Solution

The fourth proportional to 883.28, 1,327.08 and 740.72 is: 1,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.28 : 1,327.08 = 740.72 : x
  2. Step 2: Convert to fraction form
    883.28/1,327.08 = 740.72/x
  3. Step 3: Cross multiply
    883.28x = 1,327.08 × 740.72
  4. Step 4: Simplify right side
    883.28x = 982,994.70
  5. Step 5: Solve for x
    x = 982,994.70/883.28
  6. Step 6: Final answer
    x = 1,112.89

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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.