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Finding the Fourth Proportional to 1,649.60, 2,473.76 and 675.36

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Solution

The fourth proportional to 1,649.60, 2,473.76 and 675.36 is: 1,012.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.60 : 2,473.76 = 675.36 : x
  2. Step 2: Convert to fraction form
    1,649.60/2,473.76 = 675.36/x
  3. Step 3: Cross multiply
    1,649.60x = 2,473.76 × 675.36
  4. Step 4: Simplify right side
    1,649.60x = 1,670,678.55
  5. Step 5: Solve for x
    x = 1,670,678.55/1,649.60
  6. Step 6: Final answer
    x = 1,012.78

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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.