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Finding the Fourth Proportional to 242.54, 334.77 and 149.30

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Solution

The fourth proportional to 242.54, 334.77 and 149.30 is: 206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.54 : 334.77 = 149.30 : x
  2. Step 2: Convert to fraction form
    242.54/334.77 = 149.30/x
  3. Step 3: Cross multiply
    242.54x = 334.77 × 149.30
  4. Step 4: Simplify right side
    242.54x = 49,981.16
  5. Step 5: Solve for x
    x = 49,981.16/242.54
  6. Step 6: Final answer
    x = 206.07

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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.