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Finding the Fourth Proportional to 238.14, 356.33 and 145.26

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Solution

The fourth proportional to 238.14, 356.33 and 145.26 is: 217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.14 : 356.33 = 145.26 : x
  2. Step 2: Convert to fraction form
    238.14/356.33 = 145.26/x
  3. Step 3: Cross multiply
    238.14x = 356.33 × 145.26
  4. Step 4: Simplify right side
    238.14x = 51,760.86
  5. Step 5: Solve for x
    x = 51,760.86/238.14
  6. Step 6: Final answer
    x = 217.35

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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.