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Finding the Fourth Proportional to 799.21, 1,103.35 and 560.67

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Solution

The fourth proportional to 799.21, 1,103.35 and 560.67 is: 774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.21 : 1,103.35 = 560.67 : x
  2. Step 2: Convert to fraction form
    799.21/1,103.35 = 560.67/x
  3. Step 3: Cross multiply
    799.21x = 1,103.35 × 560.67
  4. Step 4: Simplify right side
    799.21x = 618,612.44
  5. Step 5: Solve for x
    x = 618,612.44/799.21
  6. Step 6: Final answer
    x = 774.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.