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Finding the Fourth Proportional to 735.12, 1,015.61 and 605.79

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Solution

The fourth proportional to 735.12, 1,015.61 and 605.79 is: 836.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    735.12 : 1,015.61 = 605.79 : x
  2. Step 2: Convert to fraction form
    735.12/1,015.61 = 605.79/x
  3. Step 3: Cross multiply
    735.12x = 1,015.61 × 605.79
  4. Step 4: Simplify right side
    735.12x = 615,243.35
  5. Step 5: Solve for x
    x = 615,243.35/735.12
  6. Step 6: Final answer
    x = 836.93

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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.