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Finding the Fourth Proportional to 442.68, 611.16 and 277.12

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Solution

The fourth proportional to 442.68, 611.16 and 277.12 is: 382.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.68 : 611.16 = 277.12 : x
  2. Step 2: Convert to fraction form
    442.68/611.16 = 277.12/x
  3. Step 3: Cross multiply
    442.68x = 611.16 × 277.12
  4. Step 4: Simplify right side
    442.68x = 169,364.66
  5. Step 5: Solve for x
    x = 169,364.66/442.68
  6. Step 6: Final answer
    x = 382.59

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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.