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Finding the Fourth Proportional to 229.39, 314.11 and 216.90

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Solution

The fourth proportional to 229.39, 314.11 and 216.90 is: 297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.39 : 314.11 = 216.90 : x
  2. Step 2: Convert to fraction form
    229.39/314.11 = 216.90/x
  3. Step 3: Cross multiply
    229.39x = 314.11 × 216.90
  4. Step 4: Simplify right side
    229.39x = 68,130.46
  5. Step 5: Solve for x
    x = 68,130.46/229.39
  6. Step 6: Final answer
    x = 297.01

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.