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Finding the Fourth Proportional to 749.83, 1,124.87 and 263.02

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Solution

The fourth proportional to 749.83, 1,124.87 and 263.02 is: 394.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.83 : 1,124.87 = 263.02 : x
  2. Step 2: Convert to fraction form
    749.83/1,124.87 = 263.02/x
  3. Step 3: Cross multiply
    749.83x = 1,124.87 × 263.02
  4. Step 4: Simplify right side
    749.83x = 295,863.31
  5. Step 5: Solve for x
    x = 295,863.31/749.83
  6. Step 6: Final answer
    x = 394.57

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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.