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Finding the Fourth Proportional to 586.19, 879.14 and 220.77

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Solution

The fourth proportional to 586.19, 879.14 and 220.77 is: 331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.19 : 879.14 = 220.77 : x
  2. Step 2: Convert to fraction form
    586.19/879.14 = 220.77/x
  3. Step 3: Cross multiply
    586.19x = 879.14 × 220.77
  4. Step 4: Simplify right side
    586.19x = 194,086.63
  5. Step 5: Solve for x
    x = 194,086.63/586.19
  6. Step 6: Final answer
    x = 331.10

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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.