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Finding the Fourth Proportional to 657.97, 985.83 and 383.38

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Solution

The fourth proportional to 657.97, 985.83 and 383.38 is: 574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.97 : 985.83 = 383.38 : x
  2. Step 2: Convert to fraction form
    657.97/985.83 = 383.38/x
  3. Step 3: Cross multiply
    657.97x = 985.83 × 383.38
  4. Step 4: Simplify right side
    657.97x = 377,947.51
  5. Step 5: Solve for x
    x = 377,947.51/657.97
  6. Step 6: Final answer
    x = 574.41

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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.