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Finding the Fourth Proportional to 906.73, 1,251.45 and 533.81

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Solution

The fourth proportional to 906.73, 1,251.45 and 533.81 is: 736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.73 : 1,251.45 = 533.81 : x
  2. Step 2: Convert to fraction form
    906.73/1,251.45 = 533.81/x
  3. Step 3: Cross multiply
    906.73x = 1,251.45 × 533.81
  4. Step 4: Simplify right side
    906.73x = 668,036.52
  5. Step 5: Solve for x
    x = 668,036.52/906.73
  6. Step 6: Final answer
    x = 736.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.