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Finding the Fourth Proportional to 674.79, 931.22 and 376.06

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Solution

The fourth proportional to 674.79, 931.22 and 376.06 is: 518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.79 : 931.22 = 376.06 : x
  2. Step 2: Convert to fraction form
    674.79/931.22 = 376.06/x
  3. Step 3: Cross multiply
    674.79x = 931.22 × 376.06
  4. Step 4: Simplify right side
    674.79x = 350,194.59
  5. Step 5: Solve for x
    x = 350,194.59/674.79
  6. Step 6: Final answer
    x = 518.97

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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.