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Finding the Fourth Proportional to 252.18, 347.49 and 242.60

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Solution

The fourth proportional to 252.18, 347.49 and 242.60 is: 334.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.18 : 347.49 = 242.60 : x
  2. Step 2: Convert to fraction form
    252.18/347.49 = 242.60/x
  3. Step 3: Cross multiply
    252.18x = 347.49 × 242.60
  4. Step 4: Simplify right side
    252.18x = 84,299.34
  5. Step 5: Solve for x
    x = 84,299.34/252.18
  6. Step 6: Final answer
    x = 334.28

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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.