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Finding the Fourth Proportional to 200.86, 301.32 and 102.07

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Solution

The fourth proportional to 200.86, 301.32 and 102.07 is: 153.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.86 : 301.32 = 102.07 : x
  2. Step 2: Convert to fraction form
    200.86/301.32 = 102.07/x
  3. Step 3: Cross multiply
    200.86x = 301.32 × 102.07
  4. Step 4: Simplify right side
    200.86x = 30,755.22
  5. Step 5: Solve for x
    x = 30,755.22/200.86
  6. Step 6: Final answer
    x = 153.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.