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Finding the Fourth Proportional to 251.13, 374.04 and 238.77

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Solution

The fourth proportional to 251.13, 374.04 and 238.77 is: 355.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.13 : 374.04 = 238.77 : x
  2. Step 2: Convert to fraction form
    251.13/374.04 = 238.77/x
  3. Step 3: Cross multiply
    251.13x = 374.04 × 238.77
  4. Step 4: Simplify right side
    251.13x = 89,309.53
  5. Step 5: Solve for x
    x = 89,309.53/251.13
  6. Step 6: Final answer
    x = 355.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.