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Finding the Fourth Proportional to 735.68, 1,015.02 and 486.92

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Solution

The fourth proportional to 735.68, 1,015.02 and 486.92 is: 671.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.68 : 1,015.02 = 486.92 : x
  2. Step 2: Convert to fraction form
    735.68/1,015.02 = 486.92/x
  3. Step 3: Cross multiply
    735.68x = 1,015.02 × 486.92
  4. Step 4: Simplify right side
    735.68x = 494,233.54
  5. Step 5: Solve for x
    x = 494,233.54/735.68
  6. Step 6: Final answer
    x = 671.81

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Double 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.