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Finding the Fourth Proportional to 213.63, 294.75 and 136.02

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Solution

The fourth proportional to 213.63, 294.75 and 136.02 is: 187.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.63 : 294.75 = 136.02 : x
  2. Step 2: Convert to fraction form
    213.63/294.75 = 136.02/x
  3. Step 3: Cross multiply
    213.63x = 294.75 × 136.02
  4. Step 4: Simplify right side
    213.63x = 40,091.90
  5. Step 5: Solve for x
    x = 40,091.90/213.63
  6. Step 6: Final answer
    x = 187.67

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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.