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Finding the Fourth Proportional to 453.88, 625.62 and 306.46

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Solution

The fourth proportional to 453.88, 625.62 and 306.46 is: 422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.88 : 625.62 = 306.46 : x
  2. Step 2: Convert to fraction form
    453.88/625.62 = 306.46/x
  3. Step 3: Cross multiply
    453.88x = 625.62 × 306.46
  4. Step 4: Simplify right side
    453.88x = 191,727.51
  5. Step 5: Solve for x
    x = 191,727.51/453.88
  6. Step 6: Final answer
    x = 422.42

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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.