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Finding the Fourth Proportional to 806.18, 1,206.16 and 713.84

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Solution

The fourth proportional to 806.18, 1,206.16 and 713.84 is: 1,068.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.18 : 1,206.16 = 713.84 : x
  2. Step 2: Convert to fraction form
    806.18/1,206.16 = 713.84/x
  3. Step 3: Cross multiply
    806.18x = 1,206.16 × 713.84
  4. Step 4: Simplify right side
    806.18x = 861,005.25
  5. Step 5: Solve for x
    x = 861,005.25/806.18
  6. Step 6: Final answer
    x = 1,068.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.