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Finding the Fourth Proportional to 238.92, 358.29 and 188.16

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Solution

The fourth proportional to 238.92, 358.29 and 188.16 is: 282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.92 : 358.29 = 188.16 : x
  2. Step 2: Convert to fraction form
    238.92/358.29 = 188.16/x
  3. Step 3: Cross multiply
    238.92x = 358.29 × 188.16
  4. Step 4: Simplify right side
    238.92x = 67,415.85
  5. Step 5: Solve for x
    x = 67,415.85/238.92
  6. Step 6: Final answer
    x = 282.17

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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.