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Finding the Fourth Proportional to 242.74, 333.75 and 216.27

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Solution

The fourth proportional to 242.74, 333.75 and 216.27 is: 297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.74 : 333.75 = 216.27 : x
  2. Step 2: Convert to fraction form
    242.74/333.75 = 216.27/x
  3. Step 3: Cross multiply
    242.74x = 333.75 × 216.27
  4. Step 4: Simplify right side
    242.74x = 72,178.44
  5. Step 5: Solve for x
    x = 72,178.44/242.74
  6. Step 6: Final answer
    x = 297.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.