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Finding the Fourth Proportional to 899.06, 1,349.27 and 412.44

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Solution

The fourth proportional to 899.06, 1,349.27 and 412.44 is: 618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.06 : 1,349.27 = 412.44 : x
  2. Step 2: Convert to fraction form
    899.06/1,349.27 = 412.44/x
  3. Step 3: Cross multiply
    899.06x = 1,349.27 × 412.44
  4. Step 4: Simplify right side
    899.06x = 556,490.86
  5. Step 5: Solve for x
    x = 556,490.86/899.06
  6. Step 6: Final answer
    x = 618.97

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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.