Home / 1,285.28-1,928.08-554.84

Finding the Fourth Proportional to 1,285.28, 1,928.08 and 554.84

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Solution

The fourth proportional to 1,285.28, 1,928.08 and 554.84 is: 832.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.28 : 1,928.08 = 554.84 : x
  2. Step 2: Convert to fraction form
    1,285.28/1,928.08 = 554.84/x
  3. Step 3: Cross multiply
    1,285.28x = 1,928.08 × 554.84
  4. Step 4: Simplify right side
    1,285.28x = 1,069,775.91
  5. Step 5: Solve for x
    x = 1,069,775.91/1,285.28
  6. Step 6: Final answer
    x = 832.33

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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.