Home / 748.03-1,120.34-358.30

Finding the Fourth Proportional to 748.03, 1,120.34 and 358.30

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Solution

The fourth proportional to 748.03, 1,120.34 and 358.30 is: 536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.03 : 1,120.34 = 358.30 : x
  2. Step 2: Convert to fraction form
    748.03/1,120.34 = 358.30/x
  3. Step 3: Cross multiply
    748.03x = 1,120.34 × 358.30
  4. Step 4: Simplify right side
    748.03x = 401,419.17
  5. Step 5: Solve for x
    x = 401,419.17/748.03
  6. Step 6: Final answer
    x = 536.63

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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.