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Finding the Fourth Proportional to 1,353.92, 2,030.57 and 622.79

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Solution

The fourth proportional to 1,353.92, 2,030.57 and 622.79 is: 934.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.92 : 2,030.57 = 622.79 : x
  2. Step 2: Convert to fraction form
    1,353.92/2,030.57 = 622.79/x
  3. Step 3: Cross multiply
    1,353.92x = 2,030.57 × 622.79
  4. Step 4: Simplify right side
    1,353.92x = 1,264,605.42
  5. Step 5: Solve for x
    x = 1,264,605.42/1,353.92
  6. Step 6: Final answer
    x = 934.04

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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.