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Finding the Fourth Proportional to 253.67, 379.98 and 123.48

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Solution

The fourth proportional to 253.67, 379.98 and 123.48 is: 184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.67 : 379.98 = 123.48 : x
  2. Step 2: Convert to fraction form
    253.67/379.98 = 123.48/x
  3. Step 3: Cross multiply
    253.67x = 379.98 × 123.48
  4. Step 4: Simplify right side
    253.67x = 46,919.93
  5. Step 5: Solve for x
    x = 46,919.93/253.67
  6. Step 6: Final answer
    x = 184.97

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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.