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Finding the Fourth Proportional to 292.60, 402.94 and 248.40

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Solution

The fourth proportional to 292.60, 402.94 and 248.40 is: 342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.60 : 402.94 = 248.40 : x
  2. Step 2: Convert to fraction form
    292.60/402.94 = 248.40/x
  3. Step 3: Cross multiply
    292.60x = 402.94 × 248.40
  4. Step 4: Simplify right side
    292.60x = 100,090.30
  5. Step 5: Solve for x
    x = 100,090.30/292.60
  6. Step 6: Final answer
    x = 342.07

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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.