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Finding the Fourth Proportional to 739.02, 1,108.52 and 252.20

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Solution

The fourth proportional to 739.02, 1,108.52 and 252.20 is: 378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.02 : 1,108.52 = 252.20 : x
  2. Step 2: Convert to fraction form
    739.02/1,108.52 = 252.20/x
  3. Step 3: Cross multiply
    739.02x = 1,108.52 × 252.20
  4. Step 4: Simplify right side
    739.02x = 279,568.74
  5. Step 5: Solve for x
    x = 279,568.74/739.02
  6. Step 6: Final answer
    x = 378.30

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Double scale
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Similar ratio
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1.5x scale

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.