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Finding the Fourth Proportional to 417.86, 577.24 and 329.58

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Solution

The fourth proportional to 417.86, 577.24 and 329.58 is: 455.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.86 : 577.24 = 329.58 : x
  2. Step 2: Convert to fraction form
    417.86/577.24 = 329.58/x
  3. Step 3: Cross multiply
    417.86x = 577.24 × 329.58
  4. Step 4: Simplify right side
    417.86x = 190,246.76
  5. Step 5: Solve for x
    x = 190,246.76/417.86
  6. Step 6: Final answer
    x = 455.29

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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.