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Finding the Fourth Proportional to 813.93, 1,122.62 and 604.11

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Solution

The fourth proportional to 813.93, 1,122.62 and 604.11 is: 833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    813.93 : 1,122.62 = 604.11 : x
  2. Step 2: Convert to fraction form
    813.93/1,122.62 = 604.11/x
  3. Step 3: Cross multiply
    813.93x = 1,122.62 × 604.11
  4. Step 4: Simplify right side
    813.93x = 678,182.95
  5. Step 5: Solve for x
    x = 678,182.95/813.93
  6. Step 6: Final answer
    x = 833.22

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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.