Home / 1,308.56-1,962.83-442.87

Finding the Fourth Proportional to 1,308.56, 1,962.83 and 442.87

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Solution

The fourth proportional to 1,308.56, 1,962.83 and 442.87 is: 664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.56 : 1,962.83 = 442.87 : x
  2. Step 2: Convert to fraction form
    1,308.56/1,962.83 = 442.87/x
  3. Step 3: Cross multiply
    1,308.56x = 1,962.83 × 442.87
  4. Step 4: Simplify right side
    1,308.56x = 869,274.72
  5. Step 5: Solve for x
    x = 869,274.72/1,308.56
  6. Step 6: Final answer
    x = 664.30

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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.