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Finding the Fourth Proportional to 638.88, 880.96 and 582.99

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Solution

The fourth proportional to 638.88, 880.96 and 582.99 is: 803.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.88 : 880.96 = 582.99 : x
  2. Step 2: Convert to fraction form
    638.88/880.96 = 582.99/x
  3. Step 3: Cross multiply
    638.88x = 880.96 × 582.99
  4. Step 4: Simplify right side
    638.88x = 513,590.87
  5. Step 5: Solve for x
    x = 513,590.87/638.88
  6. Step 6: Final answer
    x = 803.89

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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.