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Finding the Fourth Proportional to 310.59, 465.91 and 105.08

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Solution

The fourth proportional to 310.59, 465.91 and 105.08 is: 157.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.59 : 465.91 = 105.08 : x
  2. Step 2: Convert to fraction form
    310.59/465.91 = 105.08/x
  3. Step 3: Cross multiply
    310.59x = 465.91 × 105.08
  4. Step 4: Simplify right side
    310.59x = 48,957.82
  5. Step 5: Solve for x
    x = 48,957.82/310.59
  6. Step 6: Final answer
    x = 157.63

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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.