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Finding the Fourth Proportional to 331.34, 456.94 and 206.92

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Solution

The fourth proportional to 331.34, 456.94 and 206.92 is: 285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.34 : 456.94 = 206.92 : x
  2. Step 2: Convert to fraction form
    331.34/456.94 = 206.92/x
  3. Step 3: Cross multiply
    331.34x = 456.94 × 206.92
  4. Step 4: Simplify right side
    331.34x = 94,547.74
  5. Step 5: Solve for x
    x = 94,547.74/331.34
  6. Step 6: Final answer
    x = 285.35

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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.