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Finding the Fourth Proportional to 330.71, 456.48 and 206.29

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Solution

The fourth proportional to 330.71, 456.48 and 206.29 is: 284.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.71 : 456.48 = 206.29 : x
  2. Step 2: Convert to fraction form
    330.71/456.48 = 206.29/x
  3. Step 3: Cross multiply
    330.71x = 456.48 × 206.29
  4. Step 4: Simplify right side
    330.71x = 94,166.23
  5. Step 5: Solve for x
    x = 94,166.23/330.71
  6. Step 6: Final answer
    x = 284.74

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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.