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Finding the Fourth Proportional to 894.80, 1,339.32 and 461.36

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Solution

The fourth proportional to 894.80, 1,339.32 and 461.36 is: 690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.80 : 1,339.32 = 461.36 : x
  2. Step 2: Convert to fraction form
    894.80/1,339.32 = 461.36/x
  3. Step 3: Cross multiply
    894.80x = 1,339.32 × 461.36
  4. Step 4: Simplify right side
    894.80x = 617,908.68
  5. Step 5: Solve for x
    x = 617,908.68/894.80
  6. Step 6: Final answer
    x = 690.56

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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.