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Finding the Fourth Proportional to 845.81, 1,267.39 and 602.61

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Solution

The fourth proportional to 845.81, 1,267.39 and 602.61 is: 902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.81 : 1,267.39 = 602.61 : x
  2. Step 2: Convert to fraction form
    845.81/1,267.39 = 602.61/x
  3. Step 3: Cross multiply
    845.81x = 1,267.39 × 602.61
  4. Step 4: Simplify right side
    845.81x = 763,741.89
  5. Step 5: Solve for x
    x = 763,741.89/845.81
  6. Step 6: Final answer
    x = 902.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.