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Finding the Fourth Proportional to 268.81, 403.42 and 124.63

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Solution

The fourth proportional to 268.81, 403.42 and 124.63 is: 187.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.81 : 403.42 = 124.63 : x
  2. Step 2: Convert to fraction form
    268.81/403.42 = 124.63/x
  3. Step 3: Cross multiply
    268.81x = 403.42 × 124.63
  4. Step 4: Simplify right side
    268.81x = 50,278.23
  5. Step 5: Solve for x
    x = 50,278.23/268.81
  6. Step 6: Final answer
    x = 187.04

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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.