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Finding the Fourth Proportional to 1,816.58, 2,725.09 and 630.51

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Solution

The fourth proportional to 1,816.58, 2,725.09 and 630.51 is: 945.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.58 : 2,725.09 = 630.51 : x
  2. Step 2: Convert to fraction form
    1,816.58/2,725.09 = 630.51/x
  3. Step 3: Cross multiply
    1,816.58x = 2,725.09 × 630.51
  4. Step 4: Simplify right side
    1,816.58x = 1,718,195.91
  5. Step 5: Solve for x
    x = 1,718,195.91/1,816.58
  6. Step 6: Final answer
    x = 945.84

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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.