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Finding the Fourth Proportional to 228.22, 315.29 and 187.04

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Solution

The fourth proportional to 228.22, 315.29 and 187.04 is: 258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.22 : 315.29 = 187.04 : x
  2. Step 2: Convert to fraction form
    228.22/315.29 = 187.04/x
  3. Step 3: Cross multiply
    228.22x = 315.29 × 187.04
  4. Step 4: Simplify right side
    228.22x = 58,973.10
  5. Step 5: Solve for x
    x = 58,973.10/228.22
  6. Step 6: Final answer
    x = 258.41

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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.