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Finding the Fourth Proportional to 1,073.58, 1,481.67 and 607.74

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Solution

The fourth proportional to 1,073.58, 1,481.67 and 607.74 is: 838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.58 : 1,481.67 = 607.74 : x
  2. Step 2: Convert to fraction form
    1,073.58/1,481.67 = 607.74/x
  3. Step 3: Cross multiply
    1,073.58x = 1,481.67 × 607.74
  4. Step 4: Simplify right side
    1,073.58x = 900,470.13
  5. Step 5: Solve for x
    x = 900,470.13/1,073.58
  6. Step 6: Final answer
    x = 838.75

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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.