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Finding the Fourth Proportional to 272.36, 375.62 and 216.68

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Solution

The fourth proportional to 272.36, 375.62 and 216.68 is: 298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.36 : 375.62 = 216.68 : x
  2. Step 2: Convert to fraction form
    272.36/375.62 = 216.68/x
  3. Step 3: Cross multiply
    272.36x = 375.62 × 216.68
  4. Step 4: Simplify right side
    272.36x = 81,389.34
  5. Step 5: Solve for x
    x = 81,389.34/272.36
  6. Step 6: Final answer
    x = 298.83

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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.