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Finding the Fourth Proportional to 310.34, 427.60 and 222.86

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Solution

The fourth proportional to 310.34, 427.60 and 222.86 is: 307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.34 : 427.60 = 222.86 : x
  2. Step 2: Convert to fraction form
    310.34/427.60 = 222.86/x
  3. Step 3: Cross multiply
    310.34x = 427.60 × 222.86
  4. Step 4: Simplify right side
    310.34x = 95,294.94
  5. Step 5: Solve for x
    x = 95,294.94/310.34
  6. Step 6: Final answer
    x = 307.07

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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.