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Finding the Fourth Proportional to 505.08, 757.78 and 158.45

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Solution

The fourth proportional to 505.08, 757.78 and 158.45 is: 237.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.08 : 757.78 = 158.45 : x
  2. Step 2: Convert to fraction form
    505.08/757.78 = 158.45/x
  3. Step 3: Cross multiply
    505.08x = 757.78 × 158.45
  4. Step 4: Simplify right side
    505.08x = 120,071.74
  5. Step 5: Solve for x
    x = 120,071.74/505.08
  6. Step 6: Final answer
    x = 237.73

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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.