Home / 1,285.29-1,928.25-554.67

Finding the Fourth Proportional to 1,285.29, 1,928.25 and 554.67

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Solution

The fourth proportional to 1,285.29, 1,928.25 and 554.67 is: 832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.29 : 1,928.25 = 554.67 : x
  2. Step 2: Convert to fraction form
    1,285.29/1,928.25 = 554.67/x
  3. Step 3: Cross multiply
    1,285.29x = 1,928.25 × 554.67
  4. Step 4: Simplify right side
    1,285.29x = 1,069,542.43
  5. Step 5: Solve for x
    x = 1,069,542.43/1,285.29
  6. Step 6: Final answer
    x = 832.14

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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.