Home / 1,343.30-2,015.01-521.28

Finding the Fourth Proportional to 1,343.30, 2,015.01 and 521.28

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Solution

The fourth proportional to 1,343.30, 2,015.01 and 521.28 is: 781.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.30 : 2,015.01 = 521.28 : x
  2. Step 2: Convert to fraction form
    1,343.30/2,015.01 = 521.28/x
  3. Step 3: Cross multiply
    1,343.30x = 2,015.01 × 521.28
  4. Step 4: Simplify right side
    1,343.30x = 1,050,384.41
  5. Step 5: Solve for x
    x = 1,050,384.41/1,343.30
  6. Step 6: Final answer
    x = 781.95

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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.