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Finding the Fourth Proportional to 251.77, 379.18 and 223.24

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Solution

The fourth proportional to 251.77, 379.18 and 223.24 is: 336.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.77 : 379.18 = 223.24 : x
  2. Step 2: Convert to fraction form
    251.77/379.18 = 223.24/x
  3. Step 3: Cross multiply
    251.77x = 379.18 × 223.24
  4. Step 4: Simplify right side
    251.77x = 84,648.14
  5. Step 5: Solve for x
    x = 84,648.14/251.77
  6. Step 6: Final answer
    x = 336.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.