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Finding the Fourth Proportional to 268.74, 370.68 and 213.66

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Solution

The fourth proportional to 268.74, 370.68 and 213.66 is: 294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.74 : 370.68 = 213.66 : x
  2. Step 2: Convert to fraction form
    268.74/370.68 = 213.66/x
  3. Step 3: Cross multiply
    268.74x = 370.68 × 213.66
  4. Step 4: Simplify right side
    268.74x = 79,199.49
  5. Step 5: Solve for x
    x = 79,199.49/268.74
  6. Step 6: Final answer
    x = 294.71

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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.