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Finding the Fourth Proportional to 587.17, 879.34 and 449.17

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Solution

The fourth proportional to 587.17, 879.34 and 449.17 is: 672.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.17 : 879.34 = 449.17 : x
  2. Step 2: Convert to fraction form
    587.17/879.34 = 449.17/x
  3. Step 3: Cross multiply
    587.17x = 879.34 × 449.17
  4. Step 4: Simplify right side
    587.17x = 394,973.15
  5. Step 5: Solve for x
    x = 394,973.15/587.17
  6. Step 6: Final answer
    x = 672.67

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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.