Home / 1,511.10-2,266.79-415.44

Finding the Fourth Proportional to 1,511.10, 2,266.79 and 415.44

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Solution

The fourth proportional to 1,511.10, 2,266.79 and 415.44 is: 623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.10 : 2,266.79 = 415.44 : x
  2. Step 2: Convert to fraction form
    1,511.10/2,266.79 = 415.44/x
  3. Step 3: Cross multiply
    1,511.10x = 2,266.79 × 415.44
  4. Step 4: Simplify right side
    1,511.10x = 941,713.16
  5. Step 5: Solve for x
    x = 941,713.16/1,511.10
  6. Step 6: Final answer
    x = 623.20

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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.