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Finding the Fourth Proportional to 922.11, 1,383.39 and 374.37

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Solution

The fourth proportional to 922.11, 1,383.39 and 374.37 is: 561.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.11 : 1,383.39 = 374.37 : x
  2. Step 2: Convert to fraction form
    922.11/1,383.39 = 374.37/x
  3. Step 3: Cross multiply
    922.11x = 1,383.39 × 374.37
  4. Step 4: Simplify right side
    922.11x = 517,899.71
  5. Step 5: Solve for x
    x = 517,899.71/922.11
  6. Step 6: Final answer
    x = 561.65

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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.