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Finding the Fourth Proportional to 902.20, 1,246.08 and 606.96

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Solution

The fourth proportional to 902.20, 1,246.08 and 606.96 is: 838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.20 : 1,246.08 = 606.96 : x
  2. Step 2: Convert to fraction form
    902.20/1,246.08 = 606.96/x
  3. Step 3: Cross multiply
    902.20x = 1,246.08 × 606.96
  4. Step 4: Simplify right side
    902.20x = 756,320.72
  5. Step 5: Solve for x
    x = 756,320.72/902.20
  6. Step 6: Final answer
    x = 838.31

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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.