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Finding the Fourth Proportional to 213.90, 295.29 and 144.02

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Solution

The fourth proportional to 213.90, 295.29 and 144.02 is: 198.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.90 : 295.29 = 144.02 : x
  2. Step 2: Convert to fraction form
    213.90/295.29 = 144.02/x
  3. Step 3: Cross multiply
    213.90x = 295.29 × 144.02
  4. Step 4: Simplify right side
    213.90x = 42,526.19
  5. Step 5: Solve for x
    x = 42,526.19/213.90
  6. Step 6: Final answer
    x = 198.81

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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.