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Finding the Fourth Proportional to 314.37, 436.79 and 310.50

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Solution

The fourth proportional to 314.37, 436.79 and 310.50 is: 431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.37 : 436.79 = 310.50 : x
  2. Step 2: Convert to fraction form
    314.37/436.79 = 310.50/x
  3. Step 3: Cross multiply
    314.37x = 436.79 × 310.50
  4. Step 4: Simplify right side
    314.37x = 135,621.74
  5. Step 5: Solve for x
    x = 135,621.74/314.37
  6. Step 6: Final answer
    x = 431.41

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.