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Finding the Fourth Proportional to 902.99, 1,355.39 and 609.56

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Solution

The fourth proportional to 902.99, 1,355.39 and 609.56 is: 914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.99 : 1,355.39 = 609.56 : x
  2. Step 2: Convert to fraction form
    902.99/1,355.39 = 609.56/x
  3. Step 3: Cross multiply
    902.99x = 1,355.39 × 609.56
  4. Step 4: Simplify right side
    902.99x = 826,191.53
  5. Step 5: Solve for x
    x = 826,191.53/902.99
  6. Step 6: Final answer
    x = 914.95

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Double scale
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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.