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Finding the Fourth Proportional to 461.80, 637.38 and 330.76

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Solution

The fourth proportional to 461.80, 637.38 and 330.76 is: 456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.80 : 637.38 = 330.76 : x
  2. Step 2: Convert to fraction form
    461.80/637.38 = 330.76/x
  3. Step 3: Cross multiply
    461.80x = 637.38 × 330.76
  4. Step 4: Simplify right side
    461.80x = 210,819.81
  5. Step 5: Solve for x
    x = 210,819.81/461.80
  6. Step 6: Final answer
    x = 456.52

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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.