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Finding the Fourth Proportional to 2,328.45, 3,492.70 and 685.03

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Solution

The fourth proportional to 2,328.45, 3,492.70 and 685.03 is: 1,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.45 : 3,492.70 = 685.03 : x
  2. Step 2: Convert to fraction form
    2,328.45/3,492.70 = 685.03/x
  3. Step 3: Cross multiply
    2,328.45x = 3,492.70 × 685.03
  4. Step 4: Simplify right side
    2,328.45x = 2,392,604.28
  5. Step 5: Solve for x
    x = 2,392,604.28/2,328.45
  6. Step 6: Final answer
    x = 1,027.55

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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.