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Finding the Fourth Proportional to 282.29, 389.58 and 171.79

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Solution

The fourth proportional to 282.29, 389.58 and 171.79 is: 237.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.29 : 389.58 = 171.79 : x
  2. Step 2: Convert to fraction form
    282.29/389.58 = 171.79/x
  3. Step 3: Cross multiply
    282.29x = 389.58 × 171.79
  4. Step 4: Simplify right side
    282.29x = 66,924.33
  5. Step 5: Solve for x
    x = 66,924.33/282.29
  6. Step 6: Final answer
    x = 237.08

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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.