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Finding the Fourth Proportional to 1,163.92, 1,606.35 and 722.08

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Solution

The fourth proportional to 1,163.92, 1,606.35 and 722.08 is: 996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.92 : 1,606.35 = 722.08 : x
  2. Step 2: Convert to fraction form
    1,163.92/1,606.35 = 722.08/x
  3. Step 3: Cross multiply
    1,163.92x = 1,606.35 × 722.08
  4. Step 4: Simplify right side
    1,163.92x = 1,159,913.21
  5. Step 5: Solve for x
    x = 1,159,913.21/1,163.92
  6. Step 6: Final answer
    x = 996.56

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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.