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Finding the Fourth Proportional to 761.46, 1,141.74 and 350.50

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Solution

The fourth proportional to 761.46, 1,141.74 and 350.50 is: 525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.46 : 1,141.74 = 350.50 : x
  2. Step 2: Convert to fraction form
    761.46/1,141.74 = 350.50/x
  3. Step 3: Cross multiply
    761.46x = 1,141.74 × 350.50
  4. Step 4: Simplify right side
    761.46x = 400,179.87
  5. Step 5: Solve for x
    x = 400,179.87/761.46
  6. Step 6: Final answer
    x = 525.54

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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.