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Finding the Fourth Proportional to 748.37, 1,121.82 and 358.17

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Solution

The fourth proportional to 748.37, 1,121.82 and 358.17 is: 536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.37 : 1,121.82 = 358.17 : x
  2. Step 2: Convert to fraction form
    748.37/1,121.82 = 358.17/x
  3. Step 3: Cross multiply
    748.37x = 1,121.82 × 358.17
  4. Step 4: Simplify right side
    748.37x = 401,802.27
  5. Step 5: Solve for x
    x = 401,802.27/748.37
  6. Step 6: Final answer
    x = 536.91

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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.