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Finding the Fourth Proportional to 444.79, 612.93 and 320.23

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Solution

The fourth proportional to 444.79, 612.93 and 320.23 is: 441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.79 : 612.93 = 320.23 : x
  2. Step 2: Convert to fraction form
    444.79/612.93 = 320.23/x
  3. Step 3: Cross multiply
    444.79x = 612.93 × 320.23
  4. Step 4: Simplify right side
    444.79x = 196,278.57
  5. Step 5: Solve for x
    x = 196,278.57/444.79
  6. Step 6: Final answer
    x = 441.28

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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.