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Finding the Fourth Proportional to 512.06, 767.90 and 238.10

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Solution

The fourth proportional to 512.06, 767.90 and 238.10 is: 357.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.06 : 767.90 = 238.10 : x
  2. Step 2: Convert to fraction form
    512.06/767.90 = 238.10/x
  3. Step 3: Cross multiply
    512.06x = 767.90 × 238.10
  4. Step 4: Simplify right side
    512.06x = 182,836.99
  5. Step 5: Solve for x
    x = 182,836.99/512.06
  6. Step 6: Final answer
    x = 357.06

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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.