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Finding the Fourth Proportional to 242.44, 334.48 and 218.16

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Solution

The fourth proportional to 242.44, 334.48 and 218.16 is: 300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.44 : 334.48 = 218.16 : x
  2. Step 2: Convert to fraction form
    242.44/334.48 = 218.16/x
  3. Step 3: Cross multiply
    242.44x = 334.48 × 218.16
  4. Step 4: Simplify right side
    242.44x = 72,970.16
  5. Step 5: Solve for x
    x = 72,970.16/242.44
  6. Step 6: Final answer
    x = 300.98

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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.