Home / 1,432.70-2,149.32-508.15

Finding the Fourth Proportional to 1,432.70, 2,149.32 and 508.15

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Solution

The fourth proportional to 1,432.70, 2,149.32 and 508.15 is: 762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.70 : 2,149.32 = 508.15 : x
  2. Step 2: Convert to fraction form
    1,432.70/2,149.32 = 508.15/x
  3. Step 3: Cross multiply
    1,432.70x = 2,149.32 × 508.15
  4. Step 4: Simplify right side
    1,432.70x = 1,092,176.96
  5. Step 5: Solve for x
    x = 1,092,176.96/1,432.70
  6. Step 6: Final answer
    x = 762.32

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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.