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Finding the Fourth Proportional to 238.84, 358.20 and 101.85

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Solution

The fourth proportional to 238.84, 358.20 and 101.85 is: 152.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.84 : 358.20 = 101.85 : x
  2. Step 2: Convert to fraction form
    238.84/358.20 = 101.85/x
  3. Step 3: Cross multiply
    238.84x = 358.20 × 101.85
  4. Step 4: Simplify right side
    238.84x = 36,482.67
  5. Step 5: Solve for x
    x = 36,482.67/238.84
  6. Step 6: Final answer
    x = 152.75

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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.