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Finding the Fourth Proportional to 340.44, 509.85 and 186.14

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Solution

The fourth proportional to 340.44, 509.85 and 186.14 is: 278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.44 : 509.85 = 186.14 : x
  2. Step 2: Convert to fraction form
    340.44/509.85 = 186.14/x
  3. Step 3: Cross multiply
    340.44x = 509.85 × 186.14
  4. Step 4: Simplify right side
    340.44x = 94,900.46
  5. Step 5: Solve for x
    x = 94,900.46/340.44
  6. Step 6: Final answer
    x = 278.76

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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.