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Finding the Fourth Proportional to 1,025.96, 1,537.68 and 448.16

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Solution

The fourth proportional to 1,025.96, 1,537.68 and 448.16 is: 671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.96 : 1,537.68 = 448.16 : x
  2. Step 2: Convert to fraction form
    1,025.96/1,537.68 = 448.16/x
  3. Step 3: Cross multiply
    1,025.96x = 1,537.68 × 448.16
  4. Step 4: Simplify right side
    1,025.96x = 689,126.67
  5. Step 5: Solve for x
    x = 689,126.67/1,025.96
  6. Step 6: Final answer
    x = 671.69

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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.