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Finding the Fourth Proportional to 442.77, 611.10 and 277.05

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Solution

The fourth proportional to 442.77, 611.10 and 277.05 is: 382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.77 : 611.10 = 277.05 : x
  2. Step 2: Convert to fraction form
    442.77/611.10 = 277.05/x
  3. Step 3: Cross multiply
    442.77x = 611.10 × 277.05
  4. Step 4: Simplify right side
    442.77x = 169,305.26
  5. Step 5: Solve for x
    x = 169,305.26/442.77
  6. Step 6: Final answer
    x = 382.38

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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.