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Finding the Fourth Proportional to 806.94, 1,113.94 and 574.02

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Solution

The fourth proportional to 806.94, 1,113.94 and 574.02 is: 792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.94 : 1,113.94 = 574.02 : x
  2. Step 2: Convert to fraction form
    806.94/1,113.94 = 574.02/x
  3. Step 3: Cross multiply
    806.94x = 1,113.94 × 574.02
  4. Step 4: Simplify right side
    806.94x = 639,423.84
  5. Step 5: Solve for x
    x = 639,423.84/806.94
  6. Step 6: Final answer
    x = 792.41

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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.