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Finding the Fourth Proportional to 647.81, 892.17 and 606.12

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Solution

The fourth proportional to 647.81, 892.17 and 606.12 is: 834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.81 : 892.17 = 606.12 : x
  2. Step 2: Convert to fraction form
    647.81/892.17 = 606.12/x
  3. Step 3: Cross multiply
    647.81x = 892.17 × 606.12
  4. Step 4: Simplify right side
    647.81x = 540,763.75
  5. Step 5: Solve for x
    x = 540,763.75/647.81
  6. Step 6: Final answer
    x = 834.75

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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.