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Finding the Fourth Proportional to 654.31, 902.79 and 370.71

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Solution

The fourth proportional to 654.31, 902.79 and 370.71 is: 511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.31 : 902.79 = 370.71 : x
  2. Step 2: Convert to fraction form
    654.31/902.79 = 370.71/x
  3. Step 3: Cross multiply
    654.31x = 902.79 × 370.71
  4. Step 4: Simplify right side
    654.31x = 334,672.29
  5. Step 5: Solve for x
    x = 334,672.29/654.31
  6. Step 6: Final answer
    x = 511.49

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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.