Home / 1,485.24-2,228.08-511.08

Finding the Fourth Proportional to 1,485.24, 2,228.08 and 511.08

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Solution

The fourth proportional to 1,485.24, 2,228.08 and 511.08 is: 766.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.24 : 2,228.08 = 511.08 : x
  2. Step 2: Convert to fraction form
    1,485.24/2,228.08 = 511.08/x
  3. Step 3: Cross multiply
    1,485.24x = 2,228.08 × 511.08
  4. Step 4: Simplify right side
    1,485.24x = 1,138,727.13
  5. Step 5: Solve for x
    x = 1,138,727.13/1,485.24
  6. Step 6: Final answer
    x = 766.70

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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.