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Finding the Fourth Proportional to 463.80, 643.53 and 450.36

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Solution

The fourth proportional to 463.80, 643.53 and 450.36 is: 624.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.80 : 643.53 = 450.36 : x
  2. Step 2: Convert to fraction form
    463.80/643.53 = 450.36/x
  3. Step 3: Cross multiply
    463.80x = 643.53 × 450.36
  4. Step 4: Simplify right side
    463.80x = 289,820.17
  5. Step 5: Solve for x
    x = 289,820.17/463.80
  6. Step 6: Final answer
    x = 624.88

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.