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Finding the Fourth Proportional to 212.10, 292.62 and 150.00

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Solution

The fourth proportional to 212.10, 292.62 and 150.00 is: 206.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.10 : 292.62 = 150.00 : x
  2. Step 2: Convert to fraction form
    212.10/292.62 = 150.00/x
  3. Step 3: Cross multiply
    212.10x = 292.62 × 150.00
  4. Step 4: Simplify right side
    212.10x = 43,891.54
  5. Step 5: Solve for x
    x = 43,891.54/212.10
  6. Step 6: Final answer
    x = 206.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.