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Finding the Fourth Proportional to 2,174.91, 3,262.34 and 531.46

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Solution

The fourth proportional to 2,174.91, 3,262.34 and 531.46 is: 797.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.91 : 3,262.34 = 531.46 : x
  2. Step 2: Convert to fraction form
    2,174.91/3,262.34 = 531.46/x
  3. Step 3: Cross multiply
    2,174.91x = 3,262.34 × 531.46
  4. Step 4: Simplify right side
    2,174.91x = 1,733,803.22
  5. Step 5: Solve for x
    x = 1,733,803.22/2,174.91
  6. Step 6: Final answer
    x = 797.18

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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.