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Finding the Fourth Proportional to 746.42, 1,120.22 and 400.01

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Solution

The fourth proportional to 746.42, 1,120.22 and 400.01 is: 600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.42 : 1,120.22 = 400.01 : x
  2. Step 2: Convert to fraction form
    746.42/1,120.22 = 400.01/x
  3. Step 3: Cross multiply
    746.42x = 1,120.22 × 400.01
  4. Step 4: Simplify right side
    746.42x = 448,091.60
  5. Step 5: Solve for x
    x = 448,091.60/746.42
  6. Step 6: Final answer
    x = 600.33

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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.