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Finding the Fourth Proportional to 149.30, 223.06 and 144.19

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Solution

The fourth proportional to 149.30, 223.06 and 144.19 is: 215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.30 : 223.06 = 144.19 : x
  2. Step 2: Convert to fraction form
    149.30/223.06 = 144.19/x
  3. Step 3: Cross multiply
    149.30x = 223.06 × 144.19
  4. Step 4: Simplify right side
    149.30x = 32,162.10
  5. Step 5: Solve for x
    x = 32,162.10/149.30
  6. Step 6: Final answer
    x = 215.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.