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Finding the Fourth Proportional to 1,323.25, 1,984.88 and 906.37

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Solution

The fourth proportional to 1,323.25, 1,984.88 and 906.37 is: 1,359.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.25 : 1,984.88 = 906.37 : x
  2. Step 2: Convert to fraction form
    1,323.25/1,984.88 = 906.37/x
  3. Step 3: Cross multiply
    1,323.25x = 1,984.88 × 906.37
  4. Step 4: Simplify right side
    1,323.25x = 1,799,031.15
  5. Step 5: Solve for x
    x = 1,799,031.15/1,323.25
  6. Step 6: Final answer
    x = 1,359.56

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Similar ratio
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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.