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Finding the Fourth Proportional to 968.54, 1,452.36 and 448.40

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Solution

The fourth proportional to 968.54, 1,452.36 and 448.40 is: 672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.54 : 1,452.36 = 448.40 : x
  2. Step 2: Convert to fraction form
    968.54/1,452.36 = 448.40/x
  3. Step 3: Cross multiply
    968.54x = 1,452.36 × 448.40
  4. Step 4: Simplify right side
    968.54x = 651,238.22
  5. Step 5: Solve for x
    x = 651,238.22/968.54
  6. Step 6: Final answer
    x = 672.39

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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.