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Finding the Fourth Proportional to 1,046.44, 1,442.91 and 747.82

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Solution

The fourth proportional to 1,046.44, 1,442.91 and 747.82 is: 1,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.44 : 1,442.91 = 747.82 : x
  2. Step 2: Convert to fraction form
    1,046.44/1,442.91 = 747.82/x
  3. Step 3: Cross multiply
    1,046.44x = 1,442.91 × 747.82
  4. Step 4: Simplify right side
    1,046.44x = 1,079,036.96
  5. Step 5: Solve for x
    x = 1,079,036.96/1,046.44
  6. Step 6: Final answer
    x = 1,031.15

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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.