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Finding the Fourth Proportional to 1,453.01, 2,178.28 and 630.65

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Solution

The fourth proportional to 1,453.01, 2,178.28 and 630.65 is: 945.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.01 : 2,178.28 = 630.65 : x
  2. Step 2: Convert to fraction form
    1,453.01/2,178.28 = 630.65/x
  3. Step 3: Cross multiply
    1,453.01x = 2,178.28 × 630.65
  4. Step 4: Simplify right side
    1,453.01x = 1,373,736.15
  5. Step 5: Solve for x
    x = 1,373,736.15/1,453.01
  6. Step 6: Final answer
    x = 945.44

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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.