Home / 1,308.44-1,962.51-486.62

Finding the Fourth Proportional to 1,308.44, 1,962.51 and 486.62

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Solution

The fourth proportional to 1,308.44, 1,962.51 and 486.62 is: 729.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.44 : 1,962.51 = 486.62 : x
  2. Step 2: Convert to fraction form
    1,308.44/1,962.51 = 486.62/x
  3. Step 3: Cross multiply
    1,308.44x = 1,962.51 × 486.62
  4. Step 4: Simplify right side
    1,308.44x = 955,006.11
  5. Step 5: Solve for x
    x = 955,006.11/1,308.44
  6. Step 6: Final answer
    x = 729.88

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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.