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Finding the Fourth Proportional to 213.37, 294.41 and 135.76

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Solution

The fourth proportional to 213.37, 294.41 and 135.76 is: 187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.37 : 294.41 = 135.76 : x
  2. Step 2: Convert to fraction form
    213.37/294.41 = 135.76/x
  3. Step 3: Cross multiply
    213.37x = 294.41 × 135.76
  4. Step 4: Simplify right side
    213.37x = 39,968.42
  5. Step 5: Solve for x
    x = 39,968.42/213.37
  6. Step 6: Final answer
    x = 187.32

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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.