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Finding the Fourth Proportional to 509.28, 764.15 and 184.70

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Solution

The fourth proportional to 509.28, 764.15 and 184.70 is: 277.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.28 : 764.15 = 184.70 : x
  2. Step 2: Convert to fraction form
    509.28/764.15 = 184.70/x
  3. Step 3: Cross multiply
    509.28x = 764.15 × 184.70
  4. Step 4: Simplify right side
    509.28x = 141,133.76
  5. Step 5: Solve for x
    x = 141,133.76/509.28
  6. Step 6: Final answer
    x = 277.12

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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.