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Finding the Fourth Proportional to 799.93, 1,104.20 and 603.91

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Solution

The fourth proportional to 799.93, 1,104.20 and 603.91 is: 833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.93 : 1,104.20 = 603.91 : x
  2. Step 2: Convert to fraction form
    799.93/1,104.20 = 603.91/x
  3. Step 3: Cross multiply
    799.93x = 1,104.20 × 603.91
  4. Step 4: Simplify right side
    799.93x = 666,837.42
  5. Step 5: Solve for x
    x = 666,837.42/799.93
  6. Step 6: Final answer
    x = 833.62

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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.