Home / 1,417.10-2,125.64-443.20

Finding the Fourth Proportional to 1,417.10, 2,125.64 and 443.20

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Solution

The fourth proportional to 1,417.10, 2,125.64 and 443.20 is: 664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.10 : 2,125.64 = 443.20 : x
  2. Step 2: Convert to fraction form
    1,417.10/2,125.64 = 443.20/x
  3. Step 3: Cross multiply
    1,417.10x = 2,125.64 × 443.20
  4. Step 4: Simplify right side
    1,417.10x = 942,083.65
  5. Step 5: Solve for x
    x = 942,083.65/1,417.10
  6. Step 6: Final answer
    x = 664.80

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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.