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Finding the Fourth Proportional to 738.30, 1,101.48 and 664.49

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Solution

The fourth proportional to 738.30, 1,101.48 and 664.49 is: 991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.30 : 1,101.48 = 664.49 : x
  2. Step 2: Convert to fraction form
    738.30/1,101.48 = 664.49/x
  3. Step 3: Cross multiply
    738.30x = 1,101.48 × 664.49
  4. Step 4: Simplify right side
    738.30x = 731,922.71
  5. Step 5: Solve for x
    x = 731,922.71/738.30
  6. Step 6: Final answer
    x = 991.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.