Home / 1,285.98-1,929.60-464.43

Finding the Fourth Proportional to 1,285.98, 1,929.60 and 464.43

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Solution

The fourth proportional to 1,285.98, 1,929.60 and 464.43 is: 696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.98 : 1,929.60 = 464.43 : x
  2. Step 2: Convert to fraction form
    1,285.98/1,929.60 = 464.43/x
  3. Step 3: Cross multiply
    1,285.98x = 1,929.60 × 464.43
  4. Step 4: Simplify right side
    1,285.98x = 896,164.13
  5. Step 5: Solve for x
    x = 896,164.13/1,285.98
  6. Step 6: Final answer
    x = 696.87

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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.