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Finding the Fourth Proportional to 225.87, 336.91 and 216.15

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Solution

The fourth proportional to 225.87, 336.91 and 216.15 is: 322.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.87 : 336.91 = 216.15 : x
  2. Step 2: Convert to fraction form
    225.87/336.91 = 216.15/x
  3. Step 3: Cross multiply
    225.87x = 336.91 × 216.15
  4. Step 4: Simplify right side
    225.87x = 72,822.56
  5. Step 5: Solve for x
    x = 72,822.56/225.87
  6. Step 6: Final answer
    x = 322.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.