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Finding the Fourth Proportional to 792.32, 1,095.28 and 784.96

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Solution

The fourth proportional to 792.32, 1,095.28 and 784.96 is: 1,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.32 : 1,095.28 = 784.96 : x
  2. Step 2: Convert to fraction form
    792.32/1,095.28 = 784.96/x
  3. Step 3: Cross multiply
    792.32x = 1,095.28 × 784.96
  4. Step 4: Simplify right side
    792.32x = 859,750.99
  5. Step 5: Solve for x
    x = 859,750.99/792.32
  6. Step 6: Final answer
    x = 1,085.11

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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.