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Finding the Fourth Proportional to 889.88, 1,328.02 and 792.68

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Solution

The fourth proportional to 889.88, 1,328.02 and 792.68 is: 1,182.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.88 : 1,328.02 = 792.68 : x
  2. Step 2: Convert to fraction form
    889.88/1,328.02 = 792.68/x
  3. Step 3: Cross multiply
    889.88x = 1,328.02 × 792.68
  4. Step 4: Simplify right side
    889.88x = 1,052,694.89
  5. Step 5: Solve for x
    x = 1,052,694.89/889.88
  6. Step 6: Final answer
    x = 1,182.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.