Home / 1,285.63-1,929.48-464.48

Finding the Fourth Proportional to 1,285.63, 1,929.48 and 464.48

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Solution

The fourth proportional to 1,285.63, 1,929.48 and 464.48 is: 697.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.63 : 1,929.48 = 464.48 : x
  2. Step 2: Convert to fraction form
    1,285.63/1,929.48 = 464.48/x
  3. Step 3: Cross multiply
    1,285.63x = 1,929.48 × 464.48
  4. Step 4: Simplify right side
    1,285.63x = 896,204.87
  5. Step 5: Solve for x
    x = 896,204.87/1,285.63
  6. Step 6: Final answer
    x = 697.09

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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.