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Finding the Fourth Proportional to 889.79, 1,335.48 and 792.14

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Solution

The fourth proportional to 889.79, 1,335.48 and 792.14 is: 1,188.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.79 : 1,335.48 = 792.14 : x
  2. Step 2: Convert to fraction form
    889.79/1,335.48 = 792.14/x
  3. Step 3: Cross multiply
    889.79x = 1,335.48 × 792.14
  4. Step 4: Simplify right side
    889.79x = 1,057,887.13
  5. Step 5: Solve for x
    x = 1,057,887.13/889.79
  6. Step 6: Final answer
    x = 1,188.92

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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.