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Finding the Fourth Proportional to 1,396.41, 2,094.12 and 471.78

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Solution

The fourth proportional to 1,396.41, 2,094.12 and 471.78 is: 707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.41 : 2,094.12 = 471.78 : x
  2. Step 2: Convert to fraction form
    1,396.41/2,094.12 = 471.78/x
  3. Step 3: Cross multiply
    1,396.41x = 2,094.12 × 471.78
  4. Step 4: Simplify right side
    1,396.41x = 987,963.93
  5. Step 5: Solve for x
    x = 987,963.93/1,396.41
  6. Step 6: Final answer
    x = 707.50

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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.