Home / 1,421.00-2,131.48-496.55

Finding the Fourth Proportional to 1,421.00, 2,131.48 and 496.55

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Solution

The fourth proportional to 1,421.00, 2,131.48 and 496.55 is: 744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.00 : 2,131.48 = 496.55 : x
  2. Step 2: Convert to fraction form
    1,421.00/2,131.48 = 496.55/x
  3. Step 3: Cross multiply
    1,421.00x = 2,131.48 × 496.55
  4. Step 4: Simplify right side
    1,421.00x = 1,058,383.91
  5. Step 5: Solve for x
    x = 1,058,383.91/1,421.00
  6. Step 6: Final answer
    x = 744.82

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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.