Home / 1,485.14-2,227.23-511.11

Finding the Fourth Proportional to 1,485.14, 2,227.23 and 511.11

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Solution

The fourth proportional to 1,485.14, 2,227.23 and 511.11 is: 766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.14 : 2,227.23 = 511.11 : x
  2. Step 2: Convert to fraction form
    1,485.14/2,227.23 = 511.11/x
  3. Step 3: Cross multiply
    1,485.14x = 2,227.23 × 511.11
  4. Step 4: Simplify right side
    1,485.14x = 1,138,359.53
  5. Step 5: Solve for x
    x = 1,138,359.53/1,485.14
  6. Step 6: Final answer
    x = 766.50

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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.