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Finding the Fourth Proportional to 442.88, 611.20 and 268.24

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Solution

The fourth proportional to 442.88, 611.20 and 268.24 is: 370.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.88 : 611.20 = 268.24 : x
  2. Step 2: Convert to fraction form
    442.88/611.20 = 268.24/x
  3. Step 3: Cross multiply
    442.88x = 611.20 × 268.24
  4. Step 4: Simplify right side
    442.88x = 163,948.29
  5. Step 5: Solve for x
    x = 163,948.29/442.88
  6. Step 6: Final answer
    x = 370.19

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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.