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Finding the Fourth Proportional to 586.82, 880.22 and 221.63

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Solution

The fourth proportional to 586.82, 880.22 and 221.63 is: 332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.82 : 880.22 = 221.63 : x
  2. Step 2: Convert to fraction form
    586.82/880.22 = 221.63/x
  3. Step 3: Cross multiply
    586.82x = 880.22 × 221.63
  4. Step 4: Simplify right side
    586.82x = 195,079.31
  5. Step 5: Solve for x
    x = 195,079.31/586.82
  6. Step 6: Final answer
    x = 332.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.