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Finding the Fourth Proportional to 1,263.29, 1,894.94 and 493.25

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Solution

The fourth proportional to 1,263.29, 1,894.94 and 493.25 is: 739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.29 : 1,894.94 = 493.25 : x
  2. Step 2: Convert to fraction form
    1,263.29/1,894.94 = 493.25/x
  3. Step 3: Cross multiply
    1,263.29x = 1,894.94 × 493.25
  4. Step 4: Simplify right side
    1,263.29x = 934,676.69
  5. Step 5: Solve for x
    x = 934,676.69/1,263.29
  6. Step 6: Final answer
    x = 739.88

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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.