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Finding the Fourth Proportional to 672.34, 926.46 and 605.83

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Solution

The fourth proportional to 672.34, 926.46 and 605.83 is: 834.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.34 : 926.46 = 605.83 : x
  2. Step 2: Convert to fraction form
    672.34/926.46 = 605.83/x
  3. Step 3: Cross multiply
    672.34x = 926.46 × 605.83
  4. Step 4: Simplify right side
    672.34x = 561,277.26
  5. Step 5: Solve for x
    x = 561,277.26/672.34
  6. Step 6: Final answer
    x = 834.81

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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.