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Finding the Fourth Proportional to 629.50, 942.51 and 340.30

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Solution

The fourth proportional to 629.50, 942.51 and 340.30 is: 509.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.50 : 942.51 = 340.30 : x
  2. Step 2: Convert to fraction form
    629.50/942.51 = 340.30/x
  3. Step 3: Cross multiply
    629.50x = 942.51 × 340.30
  4. Step 4: Simplify right side
    629.50x = 320,736.15
  5. Step 5: Solve for x
    x = 320,736.15/629.50
  6. Step 6: Final answer
    x = 509.51

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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.