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Finding the Fourth Proportional to 806.73, 1,113.15 and 475.17

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Solution

The fourth proportional to 806.73, 1,113.15 and 475.17 is: 655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.73 : 1,113.15 = 475.17 : x
  2. Step 2: Convert to fraction form
    806.73/1,113.15 = 475.17/x
  3. Step 3: Cross multiply
    806.73x = 1,113.15 × 475.17
  4. Step 4: Simplify right side
    806.73x = 528,935.49
  5. Step 5: Solve for x
    x = 528,935.49/806.73
  6. Step 6: Final answer
    x = 655.65

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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.