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Finding the Fourth Proportional to 586.13, 878.51 and 220.68

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Solution

The fourth proportional to 586.13, 878.51 and 220.68 is: 330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.13 : 878.51 = 220.68 : x
  2. Step 2: Convert to fraction form
    586.13/878.51 = 220.68/x
  3. Step 3: Cross multiply
    586.13x = 878.51 × 220.68
  4. Step 4: Simplify right side
    586.13x = 193,868.48
  5. Step 5: Solve for x
    x = 193,868.48/586.13
  6. Step 6: Final answer
    x = 330.76

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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.