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Finding the Fourth Proportional to 242.61, 334.81 and 144.37

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Solution

The fourth proportional to 242.61, 334.81 and 144.37 is: 199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.61 : 334.81 = 144.37 : x
  2. Step 2: Convert to fraction form
    242.61/334.81 = 144.37/x
  3. Step 3: Cross multiply
    242.61x = 334.81 × 144.37
  4. Step 4: Simplify right side
    242.61x = 48,336.31
  5. Step 5: Solve for x
    x = 48,336.31/242.61
  6. Step 6: Final answer
    x = 199.23

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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.