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Finding the Fourth Proportional to 188.07, 282.15 and 159.42

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Solution

The fourth proportional to 188.07, 282.15 and 159.42 is: 239.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.07 : 282.15 = 159.42 : x
  2. Step 2: Convert to fraction form
    188.07/282.15 = 159.42/x
  3. Step 3: Cross multiply
    188.07x = 282.15 × 159.42
  4. Step 4: Simplify right side
    188.07x = 44,980.35
  5. Step 5: Solve for x
    x = 44,980.35/188.07
  6. Step 6: Final answer
    x = 239.17

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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.