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Finding the Fourth Proportional to 1,190.92, 1,643.98 and 896.26

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Solution

The fourth proportional to 1,190.92, 1,643.98 and 896.26 is: 1,237.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.92 : 1,643.98 = 896.26 : x
  2. Step 2: Convert to fraction form
    1,190.92/1,643.98 = 896.26/x
  3. Step 3: Cross multiply
    1,190.92x = 1,643.98 × 896.26
  4. Step 4: Simplify right side
    1,190.92x = 1,473,433.51
  5. Step 5: Solve for x
    x = 1,473,433.51/1,190.92
  6. Step 6: Final answer
    x = 1,237.22

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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.