Home / 1,308.17-1,962.27-443.09

Finding the Fourth Proportional to 1,308.17, 1,962.27 and 443.09

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Solution

The fourth proportional to 1,308.17, 1,962.27 and 443.09 is: 664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.17 : 1,962.27 = 443.09 : x
  2. Step 2: Convert to fraction form
    1,308.17/1,962.27 = 443.09/x
  3. Step 3: Cross multiply
    1,308.17x = 1,962.27 × 443.09
  4. Step 4: Simplify right side
    1,308.17x = 869,467.12
  5. Step 5: Solve for x
    x = 869,467.12/1,308.17
  6. Step 6: Final answer
    x = 664.64

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Double scale
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1.5x scale

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.