Home / 1,214.15-1,819.61-483.32

Finding the Fourth Proportional to 1,214.15, 1,819.61 and 483.32

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Solution

The fourth proportional to 1,214.15, 1,819.61 and 483.32 is: 724.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.15 : 1,819.61 = 483.32 : x
  2. Step 2: Convert to fraction form
    1,214.15/1,819.61 = 483.32/x
  3. Step 3: Cross multiply
    1,214.15x = 1,819.61 × 483.32
  4. Step 4: Simplify right side
    1,214.15x = 879,451.49
  5. Step 5: Solve for x
    x = 879,451.49/1,214.15
  6. Step 6: Final answer
    x = 724.34

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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.