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Finding the Fourth Proportional to 1,969.08, 2,953.74 and 670.44

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Solution

The fourth proportional to 1,969.08, 2,953.74 and 670.44 is: 1,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.08 : 2,953.74 = 670.44 : x
  2. Step 2: Convert to fraction form
    1,969.08/2,953.74 = 670.44/x
  3. Step 3: Cross multiply
    1,969.08x = 2,953.74 × 670.44
  4. Step 4: Simplify right side
    1,969.08x = 1,980,305.45
  5. Step 5: Solve for x
    x = 1,980,305.45/1,969.08
  6. Step 6: Final answer
    x = 1,005.70

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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.