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Finding the Fourth Proportional to 845.17, 1,267.79 and 709.18

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Solution

The fourth proportional to 845.17, 1,267.79 and 709.18 is: 1,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.17 : 1,267.79 = 709.18 : x
  2. Step 2: Convert to fraction form
    845.17/1,267.79 = 709.18/x
  3. Step 3: Cross multiply
    845.17x = 1,267.79 × 709.18
  4. Step 4: Simplify right side
    845.17x = 899,084.60
  5. Step 5: Solve for x
    x = 899,084.60/845.17
  6. Step 6: Final answer
    x = 1,063.79

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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.