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Finding the Fourth Proportional to 228.61, 315.06 and 181.79

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Solution

The fourth proportional to 228.61, 315.06 and 181.79 is: 250.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.61 : 315.06 = 181.79 : x
  2. Step 2: Convert to fraction form
    228.61/315.06 = 181.79/x
  3. Step 3: Cross multiply
    228.61x = 315.06 × 181.79
  4. Step 4: Simplify right side
    228.61x = 57,276.99
  5. Step 5: Solve for x
    x = 57,276.99/228.61
  6. Step 6: Final answer
    x = 250.54

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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.