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Finding the Fourth Proportional to 797.02, 1,195.38 and 426.67

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Solution

The fourth proportional to 797.02, 1,195.38 and 426.67 is: 639.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.02 : 1,195.38 = 426.67 : x
  2. Step 2: Convert to fraction form
    797.02/1,195.38 = 426.67/x
  3. Step 3: Cross multiply
    797.02x = 1,195.38 × 426.67
  4. Step 4: Simplify right side
    797.02x = 510,029.80
  5. Step 5: Solve for x
    x = 510,029.80/797.02
  6. Step 6: Final answer
    x = 639.92

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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.