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Finding the Fourth Proportional to 242.21, 334.24 and 144.01

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Solution

The fourth proportional to 242.21, 334.24 and 144.01 is: 198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.21 : 334.24 = 144.01 : x
  2. Step 2: Convert to fraction form
    242.21/334.24 = 144.01/x
  3. Step 3: Cross multiply
    242.21x = 334.24 × 144.01
  4. Step 4: Simplify right side
    242.21x = 48,131.51
  5. Step 5: Solve for x
    x = 48,131.51/242.21
  6. Step 6: Final answer
    x = 198.72

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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.