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Finding the Fourth Proportional to 230, 316.47 and 222.02

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Solution

The fourth proportional to 230, 316.47 and 222.02 is: 305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    230 : 316.47 = 222.02 : x
  2. Step 2: Convert to fraction form
    230/316.47 = 222.02/x
  3. Step 3: Cross multiply
    230x = 316.47 × 222.02
  4. Step 4: Simplify right side
    230x = 70,262.67
  5. Step 5: Solve for x
    x = 70,262.67/230
  6. Step 6: Final answer
    x = 305.49

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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.