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Finding the Fourth Proportional to 187.10, 280.38 and 95.67

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Solution

The fourth proportional to 187.10, 280.38 and 95.67 is: 143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.10 : 280.38 = 95.67 : x
  2. Step 2: Convert to fraction form
    187.10/280.38 = 95.67/x
  3. Step 3: Cross multiply
    187.10x = 280.38 × 95.67
  4. Step 4: Simplify right side
    187.10x = 26,823.95
  5. Step 5: Solve for x
    x = 26,823.95/187.10
  6. Step 6: Final answer
    x = 143.37

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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.