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Finding the Fourth Proportional to 499.93, 749.78 and 134.63

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Solution

The fourth proportional to 499.93, 749.78 and 134.63 is: 201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.93 : 749.78 = 134.63 : x
  2. Step 2: Convert to fraction form
    499.93/749.78 = 134.63/x
  3. Step 3: Cross multiply
    499.93x = 749.78 × 134.63
  4. Step 4: Simplify right side
    499.93x = 100,939.13
  5. Step 5: Solve for x
    x = 100,939.13/499.93
  6. Step 6: Final answer
    x = 201.91

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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.