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Finding the Fourth Proportional to 740.28, 1,104.63 and 671.16

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Solution

The fourth proportional to 740.28, 1,104.63 and 671.16 is: 1,001.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.28 : 1,104.63 = 671.16 : x
  2. Step 2: Convert to fraction form
    740.28/1,104.63 = 671.16/x
  3. Step 3: Cross multiply
    740.28x = 1,104.63 × 671.16
  4. Step 4: Simplify right side
    740.28x = 741,383.47
  5. Step 5: Solve for x
    x = 741,383.47/740.28
  6. Step 6: Final answer
    x = 1,001.49

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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.