Home / 1,285.26-1,928.19-554.91

Finding the Fourth Proportional to 1,285.26, 1,928.19 and 554.91

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Solution

The fourth proportional to 1,285.26, 1,928.19 and 554.91 is: 832.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.26 : 1,928.19 = 554.91 : x
  2. Step 2: Convert to fraction form
    1,285.26/1,928.19 = 554.91/x
  3. Step 3: Cross multiply
    1,285.26x = 1,928.19 × 554.91
  4. Step 4: Simplify right side
    1,285.26x = 1,069,971.91
  5. Step 5: Solve for x
    x = 1,069,971.91/1,285.26
  6. Step 6: Final answer
    x = 832.49

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1.5x scale

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.