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Finding the Fourth Proportional to 330.67, 456.55 and 206.52

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Solution

The fourth proportional to 330.67, 456.55 and 206.52 is: 285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.67 : 456.55 = 206.52 : x
  2. Step 2: Convert to fraction form
    330.67/456.55 = 206.52/x
  3. Step 3: Cross multiply
    330.67x = 456.55 × 206.52
  4. Step 4: Simplify right side
    330.67x = 94,286.71
  5. Step 5: Solve for x
    x = 94,286.71/330.67
  6. Step 6: Final answer
    x = 285.14

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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.