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Finding the Fourth Proportional to 212.10, 293.24 and 147.09

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Solution

The fourth proportional to 212.10, 293.24 and 147.09 is: 203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.10 : 293.24 = 147.09 : x
  2. Step 2: Convert to fraction form
    212.10/293.24 = 147.09/x
  3. Step 3: Cross multiply
    212.10x = 293.24 × 147.09
  4. Step 4: Simplify right side
    212.10x = 43,132.67
  5. Step 5: Solve for x
    x = 43,132.67/212.10
  6. Step 6: Final answer
    x = 203.36

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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.