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Finding the Fourth Proportional to 216.27, 296.87 and 191.16

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Solution

The fourth proportional to 216.27, 296.87 and 191.16 is: 262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.27 : 296.87 = 191.16 : x
  2. Step 2: Convert to fraction form
    216.27/296.87 = 191.16/x
  3. Step 3: Cross multiply
    216.27x = 296.87 × 191.16
  4. Step 4: Simplify right side
    216.27x = 56,748.71
  5. Step 5: Solve for x
    x = 56,748.71/216.27
  6. Step 6: Final answer
    x = 262.40

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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.