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Finding the Fourth Proportional to 228.23, 315.10 and 203.62

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Solution

The fourth proportional to 228.23, 315.10 and 203.62 is: 281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.23 : 315.10 = 203.62 : x
  2. Step 2: Convert to fraction form
    228.23/315.10 = 203.62/x
  3. Step 3: Cross multiply
    228.23x = 315.10 × 203.62
  4. Step 4: Simplify right side
    228.23x = 64,161.32
  5. Step 5: Solve for x
    x = 64,161.32/228.23
  6. Step 6: Final answer
    x = 281.13

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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.