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Finding the Fourth Proportional to 748.21, 1,032.36 and 453.41

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Solution

The fourth proportional to 748.21, 1,032.36 and 453.41 is: 625.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.21 : 1,032.36 = 453.41 : x
  2. Step 2: Convert to fraction form
    748.21/1,032.36 = 453.41/x
  3. Step 3: Cross multiply
    748.21x = 1,032.36 × 453.41
  4. Step 4: Simplify right side
    748.21x = 468,082.35
  5. Step 5: Solve for x
    x = 468,082.35/748.21
  6. Step 6: Final answer
    x = 625.60

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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.