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Finding the Fourth Proportional to 170.36, 234.82 and 156.23

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Solution

The fourth proportional to 170.36, 234.82 and 156.23 is: 215.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.36 : 234.82 = 156.23 : x
  2. Step 2: Convert to fraction form
    170.36/234.82 = 156.23/x
  3. Step 3: Cross multiply
    170.36x = 234.82 × 156.23
  4. Step 4: Simplify right side
    170.36x = 36,685.93
  5. Step 5: Solve for x
    x = 36,685.93/170.36
  6. Step 6: Final answer
    x = 215.35

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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.