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Finding the Fourth Proportional to 338.62, 508.08 and 156.04

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Solution

The fourth proportional to 338.62, 508.08 and 156.04 is: 234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.62 : 508.08 = 156.04 : x
  2. Step 2: Convert to fraction form
    338.62/508.08 = 156.04/x
  3. Step 3: Cross multiply
    338.62x = 508.08 × 156.04
  4. Step 4: Simplify right side
    338.62x = 79,280.80
  5. Step 5: Solve for x
    x = 79,280.80/338.62
  6. Step 6: Final answer
    x = 234.13

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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.