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Finding the Fourth Proportional to 448.56, 672.74 and 123.94

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Solution

The fourth proportional to 448.56, 672.74 and 123.94 is: 185.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.56 : 672.74 = 123.94 : x
  2. Step 2: Convert to fraction form
    448.56/672.74 = 123.94/x
  3. Step 3: Cross multiply
    448.56x = 672.74 × 123.94
  4. Step 4: Simplify right side
    448.56x = 83,379.40
  5. Step 5: Solve for x
    x = 83,379.40/448.56
  6. Step 6: Final answer
    x = 185.88

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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.