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Finding the Fourth Proportional to 310.99, 466.54 and 105.55

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Solution

The fourth proportional to 310.99, 466.54 and 105.55 is: 158.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.99 : 466.54 = 105.55 : x
  2. Step 2: Convert to fraction form
    310.99/466.54 = 105.55/x
  3. Step 3: Cross multiply
    310.99x = 466.54 × 105.55
  4. Step 4: Simplify right side
    310.99x = 49,245.08
  5. Step 5: Solve for x
    x = 49,245.08/310.99
  6. Step 6: Final answer
    x = 158.35

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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.