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Finding the Fourth Proportional to 1,322.68, 1,984.03 and 446.17

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Solution

The fourth proportional to 1,322.68, 1,984.03 and 446.17 is: 669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.68 : 1,984.03 = 446.17 : x
  2. Step 2: Convert to fraction form
    1,322.68/1,984.03 = 446.17/x
  3. Step 3: Cross multiply
    1,322.68x = 1,984.03 × 446.17
  4. Step 4: Simplify right side
    1,322.68x = 885,214.67
  5. Step 5: Solve for x
    x = 885,214.67/1,322.68
  6. Step 6: Final answer
    x = 669.26

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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.