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Finding the Fourth Proportional to 332.68, 458.90 and 229

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Solution

The fourth proportional to 332.68, 458.90 and 229 is: 315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.68 : 458.90 = 229 : x
  2. Step 2: Convert to fraction form
    332.68/458.90 = 229/x
  3. Step 3: Cross multiply
    332.68x = 458.90 × 229
  4. Step 4: Simplify right side
    332.68x = 105,088.10
  5. Step 5: Solve for x
    x = 105,088.10/332.68
  6. Step 6: Final answer
    x = 315.88

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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.