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Finding the Fourth Proportional to 739.02, 1,108.52 and 191.18

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Solution

The fourth proportional to 739.02, 1,108.52 and 191.18 is: 286.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.02 : 1,108.52 = 191.18 : x
  2. Step 2: Convert to fraction form
    739.02/1,108.52 = 191.18/x
  3. Step 3: Cross multiply
    739.02x = 1,108.52 × 191.18
  4. Step 4: Simplify right side
    739.02x = 211,926.85
  5. Step 5: Solve for x
    x = 211,926.85/739.02
  6. Step 6: Final answer
    x = 286.77

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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.