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Finding the Fourth Proportional to 739.80, 1,107.54 and 466.20

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Solution

The fourth proportional to 739.80, 1,107.54 and 466.20 is: 697.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.80 : 1,107.54 = 466.20 : x
  2. Step 2: Convert to fraction form
    739.80/1,107.54 = 466.20/x
  3. Step 3: Cross multiply
    739.80x = 1,107.54 × 466.20
  4. Step 4: Simplify right side
    739.80x = 516,335.15
  5. Step 5: Solve for x
    x = 516,335.15/739.80
  6. Step 6: Final answer
    x = 697.94

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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.