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Finding the Fourth Proportional to 505.50, 756.93 and 342.42

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Solution

The fourth proportional to 505.50, 756.93 and 342.42 is: 512.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.50 : 756.93 = 342.42 : x
  2. Step 2: Convert to fraction form
    505.50/756.93 = 342.42/x
  3. Step 3: Cross multiply
    505.50x = 756.93 × 342.42
  4. Step 4: Simplify right side
    505.50x = 259,187.97
  5. Step 5: Solve for x
    x = 259,187.97/505.50
  6. Step 6: Final answer
    x = 512.74

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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.