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Finding the Fourth Proportional to 2,380.64, 3,570.99 and 649.27

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Solution

The fourth proportional to 2,380.64, 3,570.99 and 649.27 is: 973.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.64 : 3,570.99 = 649.27 : x
  2. Step 2: Convert to fraction form
    2,380.64/3,570.99 = 649.27/x
  3. Step 3: Cross multiply
    2,380.64x = 3,570.99 × 649.27
  4. Step 4: Simplify right side
    2,380.64x = 2,318,518.62
  5. Step 5: Solve for x
    x = 2,318,518.62/2,380.64
  6. Step 6: Final answer
    x = 973.91

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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.