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Finding the Fourth Proportional to 1,094.63, 1,641.90 and 272.89

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Solution

The fourth proportional to 1,094.63, 1,641.90 and 272.89 is: 409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.63 : 1,641.90 = 272.89 : x
  2. Step 2: Convert to fraction form
    1,094.63/1,641.90 = 272.89/x
  3. Step 3: Cross multiply
    1,094.63x = 1,641.90 × 272.89
  4. Step 4: Simplify right side
    1,094.63x = 448,058.09
  5. Step 5: Solve for x
    x = 448,058.09/1,094.63
  6. Step 6: Final answer
    x = 409.32

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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.