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Finding the Fourth Proportional to 1,816.74, 2,725.08 and 518.10

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Solution

The fourth proportional to 1,816.74, 2,725.08 and 518.10 is: 777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.74 : 2,725.08 = 518.10 : x
  2. Step 2: Convert to fraction form
    1,816.74/2,725.08 = 518.10/x
  3. Step 3: Cross multiply
    1,816.74x = 2,725.08 × 518.10
  4. Step 4: Simplify right side
    1,816.74x = 1,411,863.95
  5. Step 5: Solve for x
    x = 1,411,863.95/1,816.74
  6. Step 6: Final answer
    x = 777.14

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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.