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Finding the Fourth Proportional to 415.11, 572.55 and 352.84

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Solution

The fourth proportional to 415.11, 572.55 and 352.84 is: 486.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.11 : 572.55 = 352.84 : x
  2. Step 2: Convert to fraction form
    415.11/572.55 = 352.84/x
  3. Step 3: Cross multiply
    415.11x = 572.55 × 352.84
  4. Step 4: Simplify right side
    415.11x = 202,018.54
  5. Step 5: Solve for x
    x = 202,018.54/415.11
  6. Step 6: Final answer
    x = 486.66

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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.