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Finding the Fourth Proportional to 797.99, 1,100.89 and 503.21

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Solution

The fourth proportional to 797.99, 1,100.89 and 503.21 is: 694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.99 : 1,100.89 = 503.21 : x
  2. Step 2: Convert to fraction form
    797.99/1,100.89 = 503.21/x
  3. Step 3: Cross multiply
    797.99x = 1,100.89 × 503.21
  4. Step 4: Simplify right side
    797.99x = 553,982.24
  5. Step 5: Solve for x
    x = 553,982.24/797.99
  6. Step 6: Final answer
    x = 694.23

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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.