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Finding the Fourth Proportional to 885.87, 1,221.49 and 606.27

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Solution

The fourth proportional to 885.87, 1,221.49 and 606.27 is: 835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.87 : 1,221.49 = 606.27 : x
  2. Step 2: Convert to fraction form
    885.87/1,221.49 = 606.27/x
  3. Step 3: Cross multiply
    885.87x = 1,221.49 × 606.27
  4. Step 4: Simplify right side
    885.87x = 740,552.74
  5. Step 5: Solve for x
    x = 740,552.74/885.87
  6. Step 6: Final answer
    x = 835.96

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Double scale
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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.