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Finding the Fourth Proportional to 242.94, 334.68 and 213.18

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Solution

The fourth proportional to 242.94, 334.68 and 213.18 is: 293.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.94 : 334.68 = 213.18 : x
  2. Step 2: Convert to fraction form
    242.94/334.68 = 213.18/x
  3. Step 3: Cross multiply
    242.94x = 334.68 × 213.18
  4. Step 4: Simplify right side
    242.94x = 71,347.08
  5. Step 5: Solve for x
    x = 71,347.08/242.94
  6. Step 6: Final answer
    x = 293.68

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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.