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Finding the Fourth Proportional to 741.44, 1,110.88 and 625.76

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Solution

The fourth proportional to 741.44, 1,110.88 and 625.76 is: 937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.44 : 1,110.88 = 625.76 : x
  2. Step 2: Convert to fraction form
    741.44/1,110.88 = 625.76/x
  3. Step 3: Cross multiply
    741.44x = 1,110.88 × 625.76
  4. Step 4: Simplify right side
    741.44x = 695,144.27
  5. Step 5: Solve for x
    x = 695,144.27/741.44
  6. Step 6: Final answer
    x = 937.56

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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.