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Finding the Fourth Proportional to 1,662.06, 2,493.07 and 429.37

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Solution

The fourth proportional to 1,662.06, 2,493.07 and 429.37 is: 644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.06 : 2,493.07 = 429.37 : x
  2. Step 2: Convert to fraction form
    1,662.06/2,493.07 = 429.37/x
  3. Step 3: Cross multiply
    1,662.06x = 2,493.07 × 429.37
  4. Step 4: Simplify right side
    1,662.06x = 1,070,442.16
  5. Step 5: Solve for x
    x = 1,070,442.16/1,662.06
  6. Step 6: Final answer
    x = 644.05

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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.