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Finding the Fourth Proportional to 417.08, 575.81 and 328.39

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Solution

The fourth proportional to 417.08, 575.81 and 328.39 is: 453.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.08 : 575.81 = 328.39 : x
  2. Step 2: Convert to fraction form
    417.08/575.81 = 328.39/x
  3. Step 3: Cross multiply
    417.08x = 575.81 × 328.39
  4. Step 4: Simplify right side
    417.08x = 189,090.25
  5. Step 5: Solve for x
    x = 189,090.25/417.08
  6. Step 6: Final answer
    x = 453.37

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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.