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Finding the Fourth Proportional to 170.58, 235.40 and 92.95

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Solution

The fourth proportional to 170.58, 235.40 and 92.95 is: 128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.58 : 235.40 = 92.95 : x
  2. Step 2: Convert to fraction form
    170.58/235.40 = 92.95/x
  3. Step 3: Cross multiply
    170.58x = 235.40 × 92.95
  4. Step 4: Simplify right side
    170.58x = 21,881.22
  5. Step 5: Solve for x
    x = 21,881.22/170.58
  6. Step 6: Final answer
    x = 128.28

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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.