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Finding the Fourth Proportional to 1,746.38, 2,619.56 and 447.85

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Solution

The fourth proportional to 1,746.38, 2,619.56 and 447.85 is: 671.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.38 : 2,619.56 = 447.85 : x
  2. Step 2: Convert to fraction form
    1,746.38/2,619.56 = 447.85/x
  3. Step 3: Cross multiply
    1,746.38x = 2,619.56 × 447.85
  4. Step 4: Simplify right side
    1,746.38x = 1,173,164.52
  5. Step 5: Solve for x
    x = 1,173,164.52/1,746.38
  6. Step 6: Final answer
    x = 671.77

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Double scale
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Similar ratio
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1.5x scale

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.