Home / 1,308.30-1,962.30-486.52

Finding the Fourth Proportional to 1,308.30, 1,962.30 and 486.52

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Solution

The fourth proportional to 1,308.30, 1,962.30 and 486.52 is: 729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.30 : 1,962.30 = 486.52 : x
  2. Step 2: Convert to fraction form
    1,308.30/1,962.30 = 486.52/x
  3. Step 3: Cross multiply
    1,308.30x = 1,962.30 × 486.52
  4. Step 4: Simplify right side
    1,308.30x = 954,698.20
  5. Step 5: Solve for x
    x = 954,698.20/1,308.30
  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.