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Finding the Fourth Proportional to 383.15, 525.30 and 376.23

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Solution

The fourth proportional to 383.15, 525.30 and 376.23 is: 515.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.15 : 525.30 = 376.23 : x
  2. Step 2: Convert to fraction form
    383.15/525.30 = 376.23/x
  3. Step 3: Cross multiply
    383.15x = 525.30 × 376.23
  4. Step 4: Simplify right side
    383.15x = 197,633.62
  5. Step 5: Solve for x
    x = 197,633.62/383.15
  6. Step 6: Final answer
    x = 515.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.