Home / 1,308.03-1,962.48-486.38

Finding the Fourth Proportional to 1,308.03, 1,962.48 and 486.38

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Solution

The fourth proportional to 1,308.03, 1,962.48 and 486.38 is: 729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.03 : 1,962.48 = 486.38 : x
  2. Step 2: Convert to fraction form
    1,308.03/1,962.48 = 486.38/x
  3. Step 3: Cross multiply
    1,308.03x = 1,962.48 × 486.38
  4. Step 4: Simplify right side
    1,308.03x = 954,498.78
  5. Step 5: Solve for x
    x = 954,498.78/1,308.03
  6. Step 6: Final answer
    x = 729.72

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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.