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Finding the Fourth Proportional to 188.08, 259.20 and 141.36

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Solution

The fourth proportional to 188.08, 259.20 and 141.36 is: 194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.08 : 259.20 = 141.36 : x
  2. Step 2: Convert to fraction form
    188.08/259.20 = 141.36/x
  3. Step 3: Cross multiply
    188.08x = 259.20 × 141.36
  4. Step 4: Simplify right side
    188.08x = 36,640.51
  5. Step 5: Solve for x
    x = 36,640.51/188.08
  6. Step 6: Final answer
    x = 194.81

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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.