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Finding the Fourth Proportional to 586.79, 880.30 and 221.58

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Solution

The fourth proportional to 586.79, 880.30 and 221.58 is: 332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.79 : 880.30 = 221.58 : x
  2. Step 2: Convert to fraction form
    586.79/880.30 = 221.58/x
  3. Step 3: Cross multiply
    586.79x = 880.30 × 221.58
  4. Step 4: Simplify right side
    586.79x = 195,057.15
  5. Step 5: Solve for x
    x = 195,057.15/586.79
  6. Step 6: Final answer
    x = 332.41

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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.