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Finding the Fourth Proportional to 1,025.48, 1,538.22 and 448.36

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Solution

The fourth proportional to 1,025.48, 1,538.22 and 448.36 is: 672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.48 : 1,538.22 = 448.36 : x
  2. Step 2: Convert to fraction form
    1,025.48/1,538.22 = 448.36/x
  3. Step 3: Cross multiply
    1,025.48x = 1,538.22 × 448.36
  4. Step 4: Simplify right side
    1,025.48x = 689,676.32
  5. Step 5: Solve for x
    x = 689,676.32/1,025.48
  6. Step 6: Final answer
    x = 672.54

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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.