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Finding the Fourth Proportional to 499.16, 747.83 and 434.36

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Solution

The fourth proportional to 499.16, 747.83 and 434.36 is: 650.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.16 : 747.83 = 434.36 : x
  2. Step 2: Convert to fraction form
    499.16/747.83 = 434.36/x
  3. Step 3: Cross multiply
    499.16x = 747.83 × 434.36
  4. Step 4: Simplify right side
    499.16x = 324,830.39
  5. Step 5: Solve for x
    x = 324,830.39/499.16
  6. Step 6: Final answer
    x = 650.75

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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.