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Finding the Fourth Proportional to 1,106.64, 1,659.74 and 448.47

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Solution

The fourth proportional to 1,106.64, 1,659.74 and 448.47 is: 672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.64 : 1,659.74 = 448.47 : x
  2. Step 2: Convert to fraction form
    1,106.64/1,659.74 = 448.47/x
  3. Step 3: Cross multiply
    1,106.64x = 1,659.74 × 448.47
  4. Step 4: Simplify right side
    1,106.64x = 744,348.87
  5. Step 5: Solve for x
    x = 744,348.87/1,106.64
  6. Step 6: Final answer
    x = 672.62

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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.