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Finding the Fourth Proportional to 2,440.99, 3,662.03 and 775.21

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Solution

The fourth proportional to 2,440.99, 3,662.03 and 775.21 is: 1,162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,440.99 : 3,662.03 = 775.21 : x
  2. Step 2: Convert to fraction form
    2,440.99/3,662.03 = 775.21/x
  3. Step 3: Cross multiply
    2,440.99x = 3,662.03 × 775.21
  4. Step 4: Simplify right side
    2,440.99x = 2,838,820.09
  5. Step 5: Solve for x
    x = 2,838,820.09/2,440.99
  6. Step 6: Final answer
    x = 1,162.98

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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.