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Finding the Fourth Proportional to 1,232.05, 1,850.78 and 909.49

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Solution

The fourth proportional to 1,232.05, 1,850.78 and 909.49 is: 1,366.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.05 : 1,850.78 = 909.49 : x
  2. Step 2: Convert to fraction form
    1,232.05/1,850.78 = 909.49/x
  3. Step 3: Cross multiply
    1,232.05x = 1,850.78 × 909.49
  4. Step 4: Simplify right side
    1,232.05x = 1,683,265.90
  5. Step 5: Solve for x
    x = 1,683,265.90/1,232.05
  6. Step 6: Final answer
    x = 1,366.23

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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.