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Finding the Fourth Proportional to 941.78, 1,412.12 and 363.98

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Solution

The fourth proportional to 941.78, 1,412.12 and 363.98 is: 545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.78 : 1,412.12 = 363.98 : x
  2. Step 2: Convert to fraction form
    941.78/1,412.12 = 363.98/x
  3. Step 3: Cross multiply
    941.78x = 1,412.12 × 363.98
  4. Step 4: Simplify right side
    941.78x = 513,983.44
  5. Step 5: Solve for x
    x = 513,983.44/941.78
  6. Step 6: Final answer
    x = 545.76

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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.