Home / 1,517.00-2,275.03-421.44

Finding the Fourth Proportional to 1,517.00, 2,275.03 and 421.44

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Solution

The fourth proportional to 1,517.00, 2,275.03 and 421.44 is: 632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.00 : 2,275.03 = 421.44 : x
  2. Step 2: Convert to fraction form
    1,517.00/2,275.03 = 421.44/x
  3. Step 3: Cross multiply
    1,517.00x = 2,275.03 × 421.44
  4. Step 4: Simplify right side
    1,517.00x = 958,780.64
  5. Step 5: Solve for x
    x = 958,780.64/1,517.00
  6. Step 6: Final answer
    x = 632.03

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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.