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Finding the Fourth Proportional to 292.97, 438.73 and 170.87

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Solution

The fourth proportional to 292.97, 438.73 and 170.87 is: 255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.97 : 438.73 = 170.87 : x
  2. Step 2: Convert to fraction form
    292.97/438.73 = 170.87/x
  3. Step 3: Cross multiply
    292.97x = 438.73 × 170.87
  4. Step 4: Simplify right side
    292.97x = 74,963.17
  5. Step 5: Solve for x
    x = 74,963.17/292.97
  6. Step 6: Final answer
    x = 255.87

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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.