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Finding the Fourth Proportional to 654.39, 903.79 and 444.20

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Solution

The fourth proportional to 654.39, 903.79 and 444.20 is: 613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.39 : 903.79 = 444.20 : x
  2. Step 2: Convert to fraction form
    654.39/903.79 = 444.20/x
  3. Step 3: Cross multiply
    654.39x = 903.79 × 444.20
  4. Step 4: Simplify right side
    654.39x = 401,459.63
  5. Step 5: Solve for x
    x = 401,459.63/654.39
  6. Step 6: Final answer
    x = 613.49

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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.