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Finding the Fourth Proportional to 1,665.14, 2,492.88 and 969.68

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Solution

The fourth proportional to 1,665.14, 2,492.88 and 969.68 is: 1,451.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.14 : 2,492.88 = 969.68 : x
  2. Step 2: Convert to fraction form
    1,665.14/2,492.88 = 969.68/x
  3. Step 3: Cross multiply
    1,665.14x = 2,492.88 × 969.68
  4. Step 4: Simplify right side
    1,665.14x = 2,417,295.88
  5. Step 5: Solve for x
    x = 2,417,295.88/1,665.14
  6. Step 6: Final answer
    x = 1,451.71

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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.