Home / 1,308.45-1,962.63-486.70

Finding the Fourth Proportional to 1,308.45, 1,962.63 and 486.70

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Solution

The fourth proportional to 1,308.45, 1,962.63 and 486.70 is: 730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.45 : 1,962.63 = 486.70 : x
  2. Step 2: Convert to fraction form
    1,308.45/1,962.63 = 486.70/x
  3. Step 3: Cross multiply
    1,308.45x = 1,962.63 × 486.70
  4. Step 4: Simplify right side
    1,308.45x = 955,212.02
  5. Step 5: Solve for x
    x = 955,212.02/1,308.45
  6. Step 6: Final answer
    x = 730.03

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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.