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Finding the Fourth Proportional to 1,418.62, 1,956.70 and 946.37

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Solution

The fourth proportional to 1,418.62, 1,956.70 and 946.37 is: 1,305.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.62 : 1,956.70 = 946.37 : x
  2. Step 2: Convert to fraction form
    1,418.62/1,956.70 = 946.37/x
  3. Step 3: Cross multiply
    1,418.62x = 1,956.70 × 946.37
  4. Step 4: Simplify right side
    1,418.62x = 1,851,751.92
  5. Step 5: Solve for x
    x = 1,851,751.92/1,418.62
  6. Step 6: Final answer
    x = 1,305.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.