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Finding the Fourth Proportional to 361.70, 545.32 and 357.62

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Solution

The fourth proportional to 361.70, 545.32 and 357.62 is: 539.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.70 : 545.32 = 357.62 : x
  2. Step 2: Convert to fraction form
    361.70/545.32 = 357.62/x
  3. Step 3: Cross multiply
    361.70x = 545.32 × 357.62
  4. Step 4: Simplify right side
    361.70x = 195,015.55
  5. Step 5: Solve for x
    x = 195,015.55/361.70
  6. Step 6: Final answer
    x = 539.16

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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.