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Finding the Fourth Proportional to 508.08, 701.33 and 397.59

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Solution

The fourth proportional to 508.08, 701.33 and 397.59 is: 548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.08 : 701.33 = 397.59 : x
  2. Step 2: Convert to fraction form
    508.08/701.33 = 397.59/x
  3. Step 3: Cross multiply
    508.08x = 701.33 × 397.59
  4. Step 4: Simplify right side
    508.08x = 278,841.79
  5. Step 5: Solve for x
    x = 278,841.79/508.08
  6. Step 6: Final answer
    x = 548.81

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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.