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Finding the Fourth Proportional to 170.83, 256.38 and 125.26

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Solution

The fourth proportional to 170.83, 256.38 and 125.26 is: 187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.83 : 256.38 = 125.26 : x
  2. Step 2: Convert to fraction form
    170.83/256.38 = 125.26/x
  3. Step 3: Cross multiply
    170.83x = 256.38 × 125.26
  4. Step 4: Simplify right side
    170.83x = 32,114.16
  5. Step 5: Solve for x
    x = 32,114.16/170.83
  6. Step 6: Final answer
    x = 187.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.