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Finding the Fourth Proportional to 213.93, 295.20 and 135.27

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Solution

The fourth proportional to 213.93, 295.20 and 135.27 is: 186.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.93 : 295.20 = 135.27 : x
  2. Step 2: Convert to fraction form
    213.93/295.20 = 135.27/x
  3. Step 3: Cross multiply
    213.93x = 295.20 × 135.27
  4. Step 4: Simplify right side
    213.93x = 39,931.70
  5. Step 5: Solve for x
    x = 39,931.70/213.93
  6. Step 6: Final answer
    x = 186.66

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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.