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Finding the Fourth Proportional to 238.86, 358.41 and 117.13

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Solution

The fourth proportional to 238.86, 358.41 and 117.13 is: 175.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.86 : 358.41 = 117.13 : x
  2. Step 2: Convert to fraction form
    238.86/358.41 = 117.13/x
  3. Step 3: Cross multiply
    238.86x = 358.41 × 117.13
  4. Step 4: Simplify right side
    238.86x = 41,980.56
  5. Step 5: Solve for x
    x = 41,980.56/238.86
  6. Step 6: Final answer
    x = 175.75

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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.