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Finding the Fourth Proportional to 1,045.87, 1,441.74 and 672.73

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Solution

The fourth proportional to 1,045.87, 1,441.74 and 672.73 is: 927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.87 : 1,441.74 = 672.73 : x
  2. Step 2: Convert to fraction form
    1,045.87/1,441.74 = 672.73/x
  3. Step 3: Cross multiply
    1,045.87x = 1,441.74 × 672.73
  4. Step 4: Simplify right side
    1,045.87x = 969,901.75
  5. Step 5: Solve for x
    x = 969,901.75/1,045.87
  6. Step 6: Final answer
    x = 927.36

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1.5x scale

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.