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Finding the Fourth Proportional to 754.54, 1,129.65 and 533.56

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Solution

The fourth proportional to 754.54, 1,129.65 and 533.56 is: 798.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.54 : 1,129.65 = 533.56 : x
  2. Step 2: Convert to fraction form
    754.54/1,129.65 = 533.56/x
  3. Step 3: Cross multiply
    754.54x = 1,129.65 × 533.56
  4. Step 4: Simplify right side
    754.54x = 602,736.52
  5. Step 5: Solve for x
    x = 602,736.52/754.54
  6. Step 6: Final answer
    x = 798.81

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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.