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Finding the Fourth Proportional to 1,418.88, 1,956.24 and 894

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Solution

The fourth proportional to 1,418.88, 1,956.24 and 894 is: 1,232.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.88 : 1,956.24 = 894 : x
  2. Step 2: Convert to fraction form
    1,418.88/1,956.24 = 894/x
  3. Step 3: Cross multiply
    1,418.88x = 1,956.24 × 894
  4. Step 4: Simplify right side
    1,418.88x = 1,748,878.56
  5. Step 5: Solve for x
    x = 1,748,878.56/1,418.88
  6. Step 6: Final answer
    x = 1,232.58

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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.