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Finding the Fourth Proportional to 540.92, 746.46 and 319.88

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Solution

The fourth proportional to 540.92, 746.46 and 319.88 is: 441.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.92 : 746.46 = 319.88 : x
  2. Step 2: Convert to fraction form
    540.92/746.46 = 319.88/x
  3. Step 3: Cross multiply
    540.92x = 746.46 × 319.88
  4. Step 4: Simplify right side
    540.92x = 238,777.62
  5. Step 5: Solve for x
    x = 238,777.62/540.92
  6. Step 6: Final answer
    x = 441.43

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.