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Finding the Fourth Proportional to 894.78, 1,343.61 and 554.94

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Solution

The fourth proportional to 894.78, 1,343.61 and 554.94 is: 833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.78 : 1,343.61 = 554.94 : x
  2. Step 2: Convert to fraction form
    894.78/1,343.61 = 554.94/x
  3. Step 3: Cross multiply
    894.78x = 1,343.61 × 554.94
  4. Step 4: Simplify right side
    894.78x = 745,622.93
  5. Step 5: Solve for x
    x = 745,622.93/894.78
  6. Step 6: Final answer
    x = 833.30

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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.