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Finding the Fourth Proportional to 230.24, 343.70 and 216.08

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Solution

The fourth proportional to 230.24, 343.70 and 216.08 is: 322.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.24 : 343.70 = 216.08 : x
  2. Step 2: Convert to fraction form
    230.24/343.70 = 216.08/x
  3. Step 3: Cross multiply
    230.24x = 343.70 × 216.08
  4. Step 4: Simplify right side
    230.24x = 74,266.70
  5. Step 5: Solve for x
    x = 74,266.70/230.24
  6. Step 6: Final answer
    x = 322.56

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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.