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Finding the Fourth Proportional to 170.93, 235.75 and 151.28

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Solution

The fourth proportional to 170.93, 235.75 and 151.28 is: 208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.93 : 235.75 = 151.28 : x
  2. Step 2: Convert to fraction form
    170.93/235.75 = 151.28/x
  3. Step 3: Cross multiply
    170.93x = 235.75 × 151.28
  4. Step 4: Simplify right side
    170.93x = 35,664.26
  5. Step 5: Solve for x
    x = 35,664.26/170.93
  6. Step 6: Final answer
    x = 208.65

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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.