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Finding the Fourth Proportional to 496.36, 685.32 and 330.76

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Solution

The fourth proportional to 496.36, 685.32 and 330.76 is: 456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.36 : 685.32 = 330.76 : x
  2. Step 2: Convert to fraction form
    496.36/685.32 = 330.76/x
  3. Step 3: Cross multiply
    496.36x = 685.32 × 330.76
  4. Step 4: Simplify right side
    496.36x = 226,676.44
  5. Step 5: Solve for x
    x = 226,676.44/496.36
  6. Step 6: Final answer
    x = 456.68

Related Problems

Find fourth proportional to 248.18, 342.66 and 165.38
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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.