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Finding the Fourth Proportional to 1,004.19, 1,383.54 and 738.10

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Solution

The fourth proportional to 1,004.19, 1,383.54 and 738.10 is: 1,016.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.19 : 1,383.54 = 738.10 : x
  2. Step 2: Convert to fraction form
    1,004.19/1,383.54 = 738.10/x
  3. Step 3: Cross multiply
    1,004.19x = 1,383.54 × 738.10
  4. Step 4: Simplify right side
    1,004.19x = 1,021,190.87
  5. Step 5: Solve for x
    x = 1,021,190.87/1,004.19
  6. Step 6: Final answer
    x = 1,016.93

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.