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Finding the Fourth Proportional to 509.99, 765.12 and 236.30

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Solution

The fourth proportional to 509.99, 765.12 and 236.30 is: 354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.99 : 765.12 = 236.30 : x
  2. Step 2: Convert to fraction form
    509.99/765.12 = 236.30/x
  3. Step 3: Cross multiply
    509.99x = 765.12 × 236.30
  4. Step 4: Simplify right side
    509.99x = 180,797.86
  5. Step 5: Solve for x
    x = 180,797.86/509.99
  6. Step 6: Final answer
    x = 354.51

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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.