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Finding the Fourth Proportional to 1,598.82, 2,396.21 and 720.39

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Solution

The fourth proportional to 1,598.82, 2,396.21 and 720.39 is: 1,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.82 : 2,396.21 = 720.39 : x
  2. Step 2: Convert to fraction form
    1,598.82/2,396.21 = 720.39/x
  3. Step 3: Cross multiply
    1,598.82x = 2,396.21 × 720.39
  4. Step 4: Simplify right side
    1,598.82x = 1,726,205.72
  5. Step 5: Solve for x
    x = 1,726,205.72/1,598.82
  6. Step 6: Final answer
    x = 1,079.67

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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.