Home / 1,308.08-1,962.37-486.35

Finding the Fourth Proportional to 1,308.08, 1,962.37 and 486.35

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Solution

The fourth proportional to 1,308.08, 1,962.37 and 486.35 is: 729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.08 : 1,962.37 = 486.35 : x
  2. Step 2: Convert to fraction form
    1,308.08/1,962.37 = 486.35/x
  3. Step 3: Cross multiply
    1,308.08x = 1,962.37 × 486.35
  4. Step 4: Simplify right side
    1,308.08x = 954,398.65
  5. Step 5: Solve for x
    x = 954,398.65/1,308.08
  6. Step 6: Final answer
    x = 729.62

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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.