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Finding the Fourth Proportional to 445.53, 672.25 and 445.53

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Solution

The fourth proportional to 445.53, 672.25 and 445.53 is: 672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.53 : 672.25 = 445.53 : x
  2. Step 2: Convert to fraction form
    445.53/672.25 = 445.53/x
  3. Step 3: Cross multiply
    445.53x = 672.25 × 445.53
  4. Step 4: Simplify right side
    445.53x = 299,510.34
  5. Step 5: Solve for x
    x = 299,510.34/445.53
  6. Step 6: Final answer
    x = 672.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.