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Finding the Fourth Proportional to 444.71, 613.76 and 320.37

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Solution

The fourth proportional to 444.71, 613.76 and 320.37 is: 442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.71 : 613.76 = 320.37 : x
  2. Step 2: Convert to fraction form
    444.71/613.76 = 320.37/x
  3. Step 3: Cross multiply
    444.71x = 613.76 × 320.37
  4. Step 4: Simplify right side
    444.71x = 196,628.69
  5. Step 5: Solve for x
    x = 196,628.69/444.71
  6. Step 6: Final answer
    x = 442.16

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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.