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Finding the Fourth Proportional to 332.30, 458.58 and 221.99

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Solution

The fourth proportional to 332.30, 458.58 and 221.99 is: 306.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.30 : 458.58 = 221.99 : x
  2. Step 2: Convert to fraction form
    332.30/458.58 = 221.99/x
  3. Step 3: Cross multiply
    332.30x = 458.58 × 221.99
  4. Step 4: Simplify right side
    332.30x = 101,797.88
  5. Step 5: Solve for x
    x = 101,797.88/332.30
  6. Step 6: Final answer
    x = 306.35

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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.