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Finding the Fourth Proportional to 633.99, 948.78 and 489.99

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Solution

The fourth proportional to 633.99, 948.78 and 489.99 is: 733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.99 : 948.78 = 489.99 : x
  2. Step 2: Convert to fraction form
    633.99/948.78 = 489.99/x
  3. Step 3: Cross multiply
    633.99x = 948.78 × 489.99
  4. Step 4: Simplify right side
    633.99x = 464,892.71
  5. Step 5: Solve for x
    x = 464,892.71/633.99
  6. Step 6: Final answer
    x = 733.28

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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.