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Finding the Fourth Proportional to 842.37, 1,161.72 and 606.21

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Solution

The fourth proportional to 842.37, 1,161.72 and 606.21 is: 836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.37 : 1,161.72 = 606.21 : x
  2. Step 2: Convert to fraction form
    842.37/1,161.72 = 606.21/x
  3. Step 3: Cross multiply
    842.37x = 1,161.72 × 606.21
  4. Step 4: Simplify right side
    842.37x = 704,246.28
  5. Step 5: Solve for x
    x = 704,246.28/842.37
  6. Step 6: Final answer
    x = 836.03

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1.5x scale

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.