Home / 1,459.10-2,188.79-485.28

Finding the Fourth Proportional to 1,459.10, 2,188.79 and 485.28

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Solution

The fourth proportional to 1,459.10, 2,188.79 and 485.28 is: 727.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.10 : 2,188.79 = 485.28 : x
  2. Step 2: Convert to fraction form
    1,459.10/2,188.79 = 485.28/x
  3. Step 3: Cross multiply
    1,459.10x = 2,188.79 × 485.28
  4. Step 4: Simplify right side
    1,459.10x = 1,062,173.58
  5. Step 5: Solve for x
    x = 1,062,173.58/1,459.10
  6. Step 6: Final answer
    x = 727.97

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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.