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Finding the Fourth Proportional to 502.38, 751.77 and 415.44

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Solution

The fourth proportional to 502.38, 751.77 and 415.44 is: 621.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.38 : 751.77 = 415.44 : x
  2. Step 2: Convert to fraction form
    502.38/751.77 = 415.44/x
  3. Step 3: Cross multiply
    502.38x = 751.77 × 415.44
  4. Step 4: Simplify right side
    502.38x = 312,315.33
  5. Step 5: Solve for x
    x = 312,315.33/502.38
  6. Step 6: Final answer
    x = 621.67

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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.