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Finding the Fourth Proportional to 496.76, 685.46 and 331.08

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Solution

The fourth proportional to 496.76, 685.46 and 331.08 is: 456.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.76 : 685.46 = 331.08 : x
  2. Step 2: Convert to fraction form
    496.76/685.46 = 331.08/x
  3. Step 3: Cross multiply
    496.76x = 685.46 × 331.08
  4. Step 4: Simplify right side
    496.76x = 226,942.10
  5. Step 5: Solve for x
    x = 226,942.10/496.76
  6. Step 6: Final answer
    x = 456.84

Related Problems

Find fourth proportional to 248.38, 342.73 and 165.54
Half scale
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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.