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Finding the Fourth Proportional to 1,469.48, 2,204.60 and 647.91

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Solution

The fourth proportional to 1,469.48, 2,204.60 and 647.91 is: 972.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.48 : 2,204.60 = 647.91 : x
  2. Step 2: Convert to fraction form
    1,469.48/2,204.60 = 647.91/x
  3. Step 3: Cross multiply
    1,469.48x = 2,204.60 × 647.91
  4. Step 4: Simplify right side
    1,469.48x = 1,428,382.39
  5. Step 5: Solve for x
    x = 1,428,382.39/1,469.48
  6. Step 6: Final answer
    x = 972.03

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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.