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Finding the Fourth Proportional to 892.02, 1,336.06 and 685.07

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Solution

The fourth proportional to 892.02, 1,336.06 and 685.07 is: 1,026.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.02 : 1,336.06 = 685.07 : x
  2. Step 2: Convert to fraction form
    892.02/1,336.06 = 685.07/x
  3. Step 3: Cross multiply
    892.02x = 1,336.06 × 685.07
  4. Step 4: Simplify right side
    892.02x = 915,289.96
  5. Step 5: Solve for x
    x = 915,289.96/892.02
  6. Step 6: Final answer
    x = 1,026.08

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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.