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Finding the Fourth Proportional to 466.78, 699.92 and 320.76

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Solution

The fourth proportional to 466.78, 699.92 and 320.76 is: 480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.78 : 699.92 = 320.76 : x
  2. Step 2: Convert to fraction form
    466.78/699.92 = 320.76/x
  3. Step 3: Cross multiply
    466.78x = 699.92 × 320.76
  4. Step 4: Simplify right side
    466.78x = 224,506.34
  5. Step 5: Solve for x
    x = 224,506.34/466.78
  6. Step 6: Final answer
    x = 480.97

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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.