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Finding the Fourth Proportional to 946.14, 1,418.23 and 685.49

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Solution

The fourth proportional to 946.14, 1,418.23 and 685.49 is: 1,027.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.14 : 1,418.23 = 685.49 : x
  2. Step 2: Convert to fraction form
    946.14/1,418.23 = 685.49/x
  3. Step 3: Cross multiply
    946.14x = 1,418.23 × 685.49
  4. Step 4: Simplify right side
    946.14x = 972,184.31
  5. Step 5: Solve for x
    x = 972,184.31/946.14
  6. Step 6: Final answer
    x = 1,027.53

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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.