Home / 1,028.16-1,541.90-479.99

Finding the Fourth Proportional to 1,028.16, 1,541.90 and 479.99

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Solution

The fourth proportional to 1,028.16, 1,541.90 and 479.99 is: 719.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.16 : 1,541.90 = 479.99 : x
  2. Step 2: Convert to fraction form
    1,028.16/1,541.90 = 479.99/x
  3. Step 3: Cross multiply
    1,028.16x = 1,541.90 × 479.99
  4. Step 4: Simplify right side
    1,028.16x = 740,101.64
  5. Step 5: Solve for x
    x = 740,101.64/1,028.16
  6. Step 6: Final answer
    x = 719.83

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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.