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Finding the Fourth Proportional to 505.07, 756.54 and 231.39

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Solution

The fourth proportional to 505.07, 756.54 and 231.39 is: 346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.07 : 756.54 = 231.39 : x
  2. Step 2: Convert to fraction form
    505.07/756.54 = 231.39/x
  3. Step 3: Cross multiply
    505.07x = 756.54 × 231.39
  4. Step 4: Simplify right side
    505.07x = 175,055.79
  5. Step 5: Solve for x
    x = 175,055.79/505.07
  6. Step 6: Final answer
    x = 346.60

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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.