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Finding the Fourth Proportional to 361.92, 545.40 and 308.52

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Solution

The fourth proportional to 361.92, 545.40 and 308.52 is: 464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.92 : 545.40 = 308.52 : x
  2. Step 2: Convert to fraction form
    361.92/545.40 = 308.52/x
  3. Step 3: Cross multiply
    361.92x = 545.40 × 308.52
  4. Step 4: Simplify right side
    361.92x = 168,266.81
  5. Step 5: Solve for x
    x = 168,266.81/361.92
  6. Step 6: Final answer
    x = 464.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.