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Finding the Fourth Proportional to 442.92, 611.35 and 277.22

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Solution

The fourth proportional to 442.92, 611.35 and 277.22 is: 382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.92 : 611.35 = 277.22 : x
  2. Step 2: Convert to fraction form
    442.92/611.35 = 277.22/x
  3. Step 3: Cross multiply
    442.92x = 611.35 × 277.22
  4. Step 4: Simplify right side
    442.92x = 169,479.28
  5. Step 5: Solve for x
    x = 169,479.28/442.92
  6. Step 6: Final answer
    x = 382.64

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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.