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Finding the Fourth Proportional to 894.04, 1,234.50 and 784.84

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Solution

The fourth proportional to 894.04, 1,234.50 and 784.84 is: 1,083.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.04 : 1,234.50 = 784.84 : x
  2. Step 2: Convert to fraction form
    894.04/1,234.50 = 784.84/x
  3. Step 3: Cross multiply
    894.04x = 1,234.50 × 784.84
  4. Step 4: Simplify right side
    894.04x = 968,884.98
  5. Step 5: Solve for x
    x = 968,884.98/894.04
  6. Step 6: Final answer
    x = 1,083.72

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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.