Home / 1,664.82-2,497.28-432.20

Finding the Fourth Proportional to 1,664.82, 2,497.28 and 432.20

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Solution

The fourth proportional to 1,664.82, 2,497.28 and 432.20 is: 648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.82 : 2,497.28 = 432.20 : x
  2. Step 2: Convert to fraction form
    1,664.82/2,497.28 = 432.20/x
  3. Step 3: Cross multiply
    1,664.82x = 2,497.28 × 432.20
  4. Step 4: Simplify right side
    1,664.82x = 1,079,328.50
  5. Step 5: Solve for x
    x = 1,079,328.50/1,664.82
  6. Step 6: Final answer
    x = 648.32

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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.