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Finding the Fourth Proportional to 187.03, 258.06 and 112.33

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Solution

The fourth proportional to 187.03, 258.06 and 112.33 is: 154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.03 : 258.06 = 112.33 : x
  2. Step 2: Convert to fraction form
    187.03/258.06 = 112.33/x
  3. Step 3: Cross multiply
    187.03x = 258.06 × 112.33
  4. Step 4: Simplify right side
    187.03x = 28,987.88
  5. Step 5: Solve for x
    x = 28,987.88/187.03
  6. Step 6: Final answer
    x = 154.99

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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.