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Finding the Fourth Proportional to 170.67, 235.60 and 126.93

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Solution

The fourth proportional to 170.67, 235.60 and 126.93 is: 175.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.67 : 235.60 = 126.93 : x
  2. Step 2: Convert to fraction form
    170.67/235.60 = 126.93/x
  3. Step 3: Cross multiply
    170.67x = 235.60 × 126.93
  4. Step 4: Simplify right side
    170.67x = 29,904.71
  5. Step 5: Solve for x
    x = 29,904.71/170.67
  6. Step 6: Final answer
    x = 175.22

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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.