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Finding the Fourth Proportional to 968.99, 1,453.25 and 448.66

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Solution

The fourth proportional to 968.99, 1,453.25 and 448.66 is: 672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.99 : 1,453.25 = 448.66 : x
  2. Step 2: Convert to fraction form
    968.99/1,453.25 = 448.66/x
  3. Step 3: Cross multiply
    968.99x = 1,453.25 × 448.66
  4. Step 4: Simplify right side
    968.99x = 652,014.72
  5. Step 5: Solve for x
    x = 652,014.72/968.99
  6. Step 6: Final answer
    x = 672.88

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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.