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Finding the Fourth Proportional to 255.79, 353.06 and 167.38

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Solution

The fourth proportional to 255.79, 353.06 and 167.38 is: 231.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.79 : 353.06 = 167.38 : x
  2. Step 2: Convert to fraction form
    255.79/353.06 = 167.38/x
  3. Step 3: Cross multiply
    255.79x = 353.06 × 167.38
  4. Step 4: Simplify right side
    255.79x = 59,095.18
  5. Step 5: Solve for x
    x = 59,095.18/255.79
  6. Step 6: Final answer
    x = 231.03

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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.