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Finding the Fourth Proportional to 187.88, 259.29 and 144.14

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Solution

The fourth proportional to 187.88, 259.29 and 144.14 is: 198.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.88 : 259.29 = 144.14 : x
  2. Step 2: Convert to fraction form
    187.88/259.29 = 144.14/x
  3. Step 3: Cross multiply
    187.88x = 259.29 × 144.14
  4. Step 4: Simplify right side
    187.88x = 37,372.76
  5. Step 5: Solve for x
    x = 37,372.76/187.88
  6. Step 6: Final answer
    x = 198.92

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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.