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Finding the Fourth Proportional to 170.13, 254.78 and 92.89

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Solution

The fourth proportional to 170.13, 254.78 and 92.89 is: 139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.13 : 254.78 = 92.89 : x
  2. Step 2: Convert to fraction form
    170.13/254.78 = 92.89/x
  3. Step 3: Cross multiply
    170.13x = 254.78 × 92.89
  4. Step 4: Simplify right side
    170.13x = 23,666.51
  5. Step 5: Solve for x
    x = 23,666.51/170.13
  6. Step 6: Final answer
    x = 139.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.