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Finding the Fourth Proportional to 1,617.44, 2,232.26 and 909.29

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Solution

The fourth proportional to 1,617.44, 2,232.26 and 909.29 is: 1,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.44 : 2,232.26 = 909.29 : x
  2. Step 2: Convert to fraction form
    1,617.44/2,232.26 = 909.29/x
  3. Step 3: Cross multiply
    1,617.44x = 2,232.26 × 909.29
  4. Step 4: Simplify right side
    1,617.44x = 2,029,755.99
  5. Step 5: Solve for x
    x = 2,029,755.99/1,617.44
  6. Step 6: Final answer
    x = 1,254.92

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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.