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Finding the Fourth Proportional to 188.54, 259.82 and 136.00

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Solution

The fourth proportional to 188.54, 259.82 and 136.00 is: 187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.54 : 259.82 = 136.00 : x
  2. Step 2: Convert to fraction form
    188.54/259.82 = 136.00/x
  3. Step 3: Cross multiply
    188.54x = 259.82 × 136.00
  4. Step 4: Simplify right side
    188.54x = 35,333.83
  5. Step 5: Solve for x
    x = 35,333.83/188.54
  6. Step 6: Final answer
    x = 187.40

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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.