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Finding the Fourth Proportional to 444.66, 612.80 and 320.11

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Solution

The fourth proportional to 444.66, 612.80 and 320.11 is: 441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.66 : 612.80 = 320.11 : x
  2. Step 2: Convert to fraction form
    444.66/612.80 = 320.11/x
  3. Step 3: Cross multiply
    444.66x = 612.80 × 320.11
  4. Step 4: Simplify right side
    444.66x = 196,161.48
  5. Step 5: Solve for x
    x = 196,161.48/444.66
  6. Step 6: Final answer
    x = 441.15

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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.