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Finding the Fourth Proportional to 444.29, 613.18 and 320.36

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Solution

The fourth proportional to 444.29, 613.18 and 320.36 is: 442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.29 : 613.18 = 320.36 : x
  2. Step 2: Convert to fraction form
    444.29/613.18 = 320.36/x
  3. Step 3: Cross multiply
    444.29x = 613.18 × 320.36
  4. Step 4: Simplify right side
    444.29x = 196,433.68
  5. Step 5: Solve for x
    x = 196,433.68/444.29
  6. Step 6: Final answer
    x = 442.13

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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.