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Finding the Fourth Proportional to 233.60, 322.11 and 228.57

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Solution

The fourth proportional to 233.60, 322.11 and 228.57 is: 315.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.60 : 322.11 = 228.57 : x
  2. Step 2: Convert to fraction form
    233.60/322.11 = 228.57/x
  3. Step 3: Cross multiply
    233.60x = 322.11 × 228.57
  4. Step 4: Simplify right side
    233.60x = 73,624.68
  5. Step 5: Solve for x
    x = 73,624.68/233.60
  6. Step 6: Final answer
    x = 315.18

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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.