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Finding the Fourth Proportional to 187.69, 259.22 and 185.13

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Solution

The fourth proportional to 187.69, 259.22 and 185.13 is: 255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.69 : 259.22 = 185.13 : x
  2. Step 2: Convert to fraction form
    187.69/259.22 = 185.13/x
  3. Step 3: Cross multiply
    187.69x = 259.22 × 185.13
  4. Step 4: Simplify right side
    187.69x = 47,988.87
  5. Step 5: Solve for x
    x = 47,988.87/187.69
  6. Step 6: Final answer
    x = 255.68

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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.