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Finding the Fourth Proportional to 228.65, 315.17 and 179.45

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Solution

The fourth proportional to 228.65, 315.17 and 179.45 is: 247.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.65 : 315.17 = 179.45 : x
  2. Step 2: Convert to fraction form
    228.65/315.17 = 179.45/x
  3. Step 3: Cross multiply
    228.65x = 315.17 × 179.45
  4. Step 4: Simplify right side
    228.65x = 56,555.68
  5. Step 5: Solve for x
    x = 56,555.68/228.65
  6. Step 6: Final answer
    x = 247.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.