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Finding the Fourth Proportional to 361.92, 498.96 and 258.24

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Solution

The fourth proportional to 361.92, 498.96 and 258.24 is: 356.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.92 : 498.96 = 258.24 : x
  2. Step 2: Convert to fraction form
    361.92/498.96 = 258.24/x
  3. Step 3: Cross multiply
    361.92x = 498.96 × 258.24
  4. Step 4: Simplify right side
    361.92x = 128,851.43
  5. Step 5: Solve for x
    x = 128,851.43/361.92
  6. Step 6: Final answer
    x = 356.02

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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.