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Finding the Fourth Proportional to 922.81, 1,383.38 and 337.40

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Solution

The fourth proportional to 922.81, 1,383.38 and 337.40 is: 505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.81 : 1,383.38 = 337.40 : x
  2. Step 2: Convert to fraction form
    922.81/1,383.38 = 337.40/x
  3. Step 3: Cross multiply
    922.81x = 1,383.38 × 337.40
  4. Step 4: Simplify right side
    922.81x = 466,750.89
  5. Step 5: Solve for x
    x = 466,750.89/922.81
  6. Step 6: Final answer
    x = 505.79

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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.