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Finding the Fourth Proportional to 330.52, 455.80 and 247.54

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Solution

The fourth proportional to 330.52, 455.80 and 247.54 is: 341.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.52 : 455.80 = 247.54 : x
  2. Step 2: Convert to fraction form
    330.52/455.80 = 247.54/x
  3. Step 3: Cross multiply
    330.52x = 455.80 × 247.54
  4. Step 4: Simplify right side
    330.52x = 112,828.73
  5. Step 5: Solve for x
    x = 112,828.73/330.52
  6. Step 6: Final answer
    x = 341.37

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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.