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Finding the Fourth Proportional to 212.53, 293.12 and 134.77

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Solution

The fourth proportional to 212.53, 293.12 and 134.77 is: 185.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.53 : 293.12 = 134.77 : x
  2. Step 2: Convert to fraction form
    212.53/293.12 = 134.77/x
  3. Step 3: Cross multiply
    212.53x = 293.12 × 134.77
  4. Step 4: Simplify right side
    212.53x = 39,503.11
  5. Step 5: Solve for x
    x = 39,503.11/212.53
  6. Step 6: Final answer
    x = 185.87

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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.