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Finding the Fourth Proportional to 228.65, 315.98 and 173.29

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Solution

The fourth proportional to 228.65, 315.98 and 173.29 is: 239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.65 : 315.98 = 173.29 : x
  2. Step 2: Convert to fraction form
    228.65/315.98 = 173.29/x
  3. Step 3: Cross multiply
    228.65x = 315.98 × 173.29
  4. Step 4: Simplify right side
    228.65x = 54,754.52
  5. Step 5: Solve for x
    x = 54,754.52/228.65
  6. Step 6: Final answer
    x = 239.47

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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.