Home / 1,485.04-2,227.48-511.20

Finding the Fourth Proportional to 1,485.04, 2,227.48 and 511.20

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Solution

The fourth proportional to 1,485.04, 2,227.48 and 511.20 is: 766.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.04 : 2,227.48 = 511.20 : x
  2. Step 2: Convert to fraction form
    1,485.04/2,227.48 = 511.20/x
  3. Step 3: Cross multiply
    1,485.04x = 2,227.48 × 511.20
  4. Step 4: Simplify right side
    1,485.04x = 1,138,687.78
  5. Step 5: Solve for x
    x = 1,138,687.78/1,485.04
  6. Step 6: Final answer
    x = 766.77

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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.