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Finding the Fourth Proportional to 632.87, 949.81 and 459.62

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Solution

The fourth proportional to 632.87, 949.81 and 459.62 is: 689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.87 : 949.81 = 459.62 : x
  2. Step 2: Convert to fraction form
    632.87/949.81 = 459.62/x
  3. Step 3: Cross multiply
    632.87x = 949.81 × 459.62
  4. Step 4: Simplify right side
    632.87x = 436,551.67
  5. Step 5: Solve for x
    x = 436,551.67/632.87
  6. Step 6: Final answer
    x = 689.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.