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Finding the Fourth Proportional to 281.96, 389.09 and 177.07

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Solution

The fourth proportional to 281.96, 389.09 and 177.07 is: 244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.96 : 389.09 = 177.07 : x
  2. Step 2: Convert to fraction form
    281.96/389.09 = 177.07/x
  3. Step 3: Cross multiply
    281.96x = 389.09 × 177.07
  4. Step 4: Simplify right side
    281.96x = 68,895.64
  5. Step 5: Solve for x
    x = 68,895.64/281.96
  6. Step 6: Final answer
    x = 244.34

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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.