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Finding the Fourth Proportional to 292.14, 403.92 and 243

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Solution

The fourth proportional to 292.14, 403.92 and 243 is: 335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.14 : 403.92 = 243 : x
  2. Step 2: Convert to fraction form
    292.14/403.92 = 243/x
  3. Step 3: Cross multiply
    292.14x = 403.92 × 243
  4. Step 4: Simplify right side
    292.14x = 98,152.56
  5. Step 5: Solve for x
    x = 98,152.56/292.14
  6. Step 6: Final answer
    x = 335.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.