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Finding the Fourth Proportional to 493.44, 740.17 and 378.09

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Solution

The fourth proportional to 493.44, 740.17 and 378.09 is: 567.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.44 : 740.17 = 378.09 : x
  2. Step 2: Convert to fraction form
    493.44/740.17 = 378.09/x
  3. Step 3: Cross multiply
    493.44x = 740.17 × 378.09
  4. Step 4: Simplify right side
    493.44x = 279,849.93
  5. Step 5: Solve for x
    x = 279,849.93/493.44
  6. Step 6: Final answer
    x = 567.15

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Double scale
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Similar ratio
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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.