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Finding the Fourth Proportional to 217.50, 300.33 and 188.10

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Solution

The fourth proportional to 217.50, 300.33 and 188.10 is: 259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.50 : 300.33 = 188.10 : x
  2. Step 2: Convert to fraction form
    217.50/300.33 = 188.10/x
  3. Step 3: Cross multiply
    217.50x = 300.33 × 188.10
  4. Step 4: Simplify right side
    217.50x = 56,492.07
  5. Step 5: Solve for x
    x = 56,492.07/217.50
  6. Step 6: Final answer
    x = 259.73

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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.