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Finding the Fourth Proportional to 415.58, 621.95 and 293.27

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Solution

The fourth proportional to 415.58, 621.95 and 293.27 is: 438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.58 : 621.95 = 293.27 : x
  2. Step 2: Convert to fraction form
    415.58/621.95 = 293.27/x
  3. Step 3: Cross multiply
    415.58x = 621.95 × 293.27
  4. Step 4: Simplify right side
    415.58x = 182,394.70
  5. Step 5: Solve for x
    x = 182,394.70/415.58
  6. Step 6: Final answer
    x = 438.90

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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.