Home / 1,308.05-1,962.09-442.37

Finding the Fourth Proportional to 1,308.05, 1,962.09 and 442.37

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Solution

The fourth proportional to 1,308.05, 1,962.09 and 442.37 is: 663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.05 : 1,962.09 = 442.37 : x
  2. Step 2: Convert to fraction form
    1,308.05/1,962.09 = 442.37/x
  3. Step 3: Cross multiply
    1,308.05x = 1,962.09 × 442.37
  4. Step 4: Simplify right side
    1,308.05x = 867,959.94
  5. Step 5: Solve for x
    x = 867,959.94/1,308.05
  6. Step 6: Final answer
    x = 663.56

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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.