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Finding the Fourth Proportional to 983.92, 1,473.54 and 550.84

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Solution

The fourth proportional to 983.92, 1,473.54 and 550.84 is: 824.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.92 : 1,473.54 = 550.84 : x
  2. Step 2: Convert to fraction form
    983.92/1,473.54 = 550.84/x
  3. Step 3: Cross multiply
    983.92x = 1,473.54 × 550.84
  4. Step 4: Simplify right side
    983.92x = 811,684.77
  5. Step 5: Solve for x
    x = 811,684.77/983.92
  6. Step 6: Final answer
    x = 824.95

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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.