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Finding the Fourth Proportional to 230.81, 318.94 and 175.45

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Solution

The fourth proportional to 230.81, 318.94 and 175.45 is: 242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.81 : 318.94 = 175.45 : x
  2. Step 2: Convert to fraction form
    230.81/318.94 = 175.45/x
  3. Step 3: Cross multiply
    230.81x = 318.94 × 175.45
  4. Step 4: Simplify right side
    230.81x = 55,958.02
  5. Step 5: Solve for x
    x = 55,958.02/230.81
  6. Step 6: Final answer
    x = 242.44

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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.