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Finding the Fourth Proportional to 499.21, 748.86 and 134.00

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Solution

The fourth proportional to 499.21, 748.86 and 134.00 is: 201.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.21 : 748.86 = 134.00 : x
  2. Step 2: Convert to fraction form
    499.21/748.86 = 134.00/x
  3. Step 3: Cross multiply
    499.21x = 748.86 × 134.00
  4. Step 4: Simplify right side
    499.21x = 100,345.46
  5. Step 5: Solve for x
    x = 100,345.46/499.21
  6. Step 6: Final answer
    x = 201.01

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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.