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Finding the Fourth Proportional to 442.82, 611.13 and 268.13

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Solution

The fourth proportional to 442.82, 611.13 and 268.13 is: 370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.82 : 611.13 = 268.13 : x
  2. Step 2: Convert to fraction form
    442.82/611.13 = 268.13/x
  3. Step 3: Cross multiply
    442.82x = 611.13 × 268.13
  4. Step 4: Simplify right side
    442.82x = 163,859.23
  5. Step 5: Solve for x
    x = 163,859.23/442.82
  6. Step 6: Final answer
    x = 370.04

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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.