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Finding the Fourth Proportional to 170.43, 235.31 and 133.53

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Solution

The fourth proportional to 170.43, 235.31 and 133.53 is: 184.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.43 : 235.31 = 133.53 : x
  2. Step 2: Convert to fraction form
    170.43/235.31 = 133.53/x
  3. Step 3: Cross multiply
    170.43x = 235.31 × 133.53
  4. Step 4: Simplify right side
    170.43x = 31,420.28
  5. Step 5: Solve for x
    x = 31,420.28/170.43
  6. Step 6: Final answer
    x = 184.36

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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.