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Finding the Fourth Proportional to 281.34, 385.82 and 277.02

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Solution

The fourth proportional to 281.34, 385.82 and 277.02 is: 379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.34 : 385.82 = 277.02 : x
  2. Step 2: Convert to fraction form
    281.34/385.82 = 277.02/x
  3. Step 3: Cross multiply
    281.34x = 385.82 × 277.02
  4. Step 4: Simplify right side
    281.34x = 106,879.86
  5. Step 5: Solve for x
    x = 106,879.86/281.34
  6. Step 6: Final answer
    x = 379.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.