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Finding the Fourth Proportional to 499.64, 750.82 and 486.68

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Solution

The fourth proportional to 499.64, 750.82 and 486.68 is: 731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.64 : 750.82 = 486.68 : x
  2. Step 2: Convert to fraction form
    499.64/750.82 = 486.68/x
  3. Step 3: Cross multiply
    499.64x = 750.82 × 486.68
  4. Step 4: Simplify right side
    499.64x = 365,409.08
  5. Step 5: Solve for x
    x = 365,409.08/499.64
  6. Step 6: Final answer
    x = 731.34

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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.