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Finding the Fourth Proportional to 268.39, 370.56 and 168.85

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Solution

The fourth proportional to 268.39, 370.56 and 168.85 is: 233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.39 : 370.56 = 168.85 : x
  2. Step 2: Convert to fraction form
    268.39/370.56 = 168.85/x
  3. Step 3: Cross multiply
    268.39x = 370.56 × 168.85
  4. Step 4: Simplify right side
    268.39x = 62,566.36
  5. Step 5: Solve for x
    x = 62,566.36/268.39
  6. Step 6: Final answer
    x = 233.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.