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Finding the Fourth Proportional to 508.19, 762.39 and 156.83

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Solution

The fourth proportional to 508.19, 762.39 and 156.83 is: 235.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.19 : 762.39 = 156.83 : x
  2. Step 2: Convert to fraction form
    508.19/762.39 = 156.83/x
  3. Step 3: Cross multiply
    508.19x = 762.39 × 156.83
  4. Step 4: Simplify right side
    508.19x = 119,565.62
  5. Step 5: Solve for x
    x = 119,565.62/508.19
  6. Step 6: Final answer
    x = 235.28

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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.