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Finding the Fourth Proportional to 902.03, 1,353.45 and 490.55

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Solution

The fourth proportional to 902.03, 1,353.45 and 490.55 is: 736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.03 : 1,353.45 = 490.55 : x
  2. Step 2: Convert to fraction form
    902.03/1,353.45 = 490.55/x
  3. Step 3: Cross multiply
    902.03x = 1,353.45 × 490.55
  4. Step 4: Simplify right side
    902.03x = 663,934.90
  5. Step 5: Solve for x
    x = 663,934.90/902.03
  6. Step 6: Final answer
    x = 736.05

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.