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Finding the Fourth Proportional to 412.89, 569.35 and 325.41

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Solution

The fourth proportional to 412.89, 569.35 and 325.41 is: 448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.89 : 569.35 = 325.41 : x
  2. Step 2: Convert to fraction form
    412.89/569.35 = 325.41/x
  3. Step 3: Cross multiply
    412.89x = 569.35 × 325.41
  4. Step 4: Simplify right side
    412.89x = 185,272.18
  5. Step 5: Solve for x
    x = 185,272.18/412.89
  6. Step 6: Final answer
    x = 448.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.