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Finding the Fourth Proportional to 448.25, 672.25 and 155.74

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Solution

The fourth proportional to 448.25, 672.25 and 155.74 is: 233.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.25 : 672.25 = 155.74 : x
  2. Step 2: Convert to fraction form
    448.25/672.25 = 155.74/x
  3. Step 3: Cross multiply
    448.25x = 672.25 × 155.74
  4. Step 4: Simplify right side
    448.25x = 104,695.70
  5. Step 5: Solve for x
    x = 104,695.70/448.25
  6. Step 6: Final answer
    x = 233.57

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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.