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Finding the Fourth Proportional to 268.53, 370.17 and 189.59

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Solution

The fourth proportional to 268.53, 370.17 and 189.59 is: 261.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.53 : 370.17 = 189.59 : x
  2. Step 2: Convert to fraction form
    268.53/370.17 = 189.59/x
  3. Step 3: Cross multiply
    268.53x = 370.17 × 189.59
  4. Step 4: Simplify right side
    268.53x = 70,178.68
  5. Step 5: Solve for x
    x = 70,178.68/268.53
  6. Step 6: Final answer
    x = 261.35

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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.