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Finding the Fourth Proportional to 625.15, 938.10 and 361.94

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Solution

The fourth proportional to 625.15, 938.10 and 361.94 is: 543.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.15 : 938.10 = 361.94 : x
  2. Step 2: Convert to fraction form
    625.15/938.10 = 361.94/x
  3. Step 3: Cross multiply
    625.15x = 938.10 × 361.94
  4. Step 4: Simplify right side
    625.15x = 339,541.11
  5. Step 5: Solve for x
    x = 339,541.11/625.15
  6. Step 6: Final answer
    x = 543.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.