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Finding the Fourth Proportional to 144.06, 214.58 and 143.76

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Solution

The fourth proportional to 144.06, 214.58 and 143.76 is: 214.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.06 : 214.58 = 143.76 : x
  2. Step 2: Convert to fraction form
    144.06/214.58 = 143.76/x
  3. Step 3: Cross multiply
    144.06x = 214.58 × 143.76
  4. Step 4: Simplify right side
    144.06x = 30,847.30
  5. Step 5: Solve for x
    x = 30,847.30/144.06
  6. Step 6: Final answer
    x = 214.13

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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.