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Finding the Fourth Proportional to 340.07, 509.81 and 123.50

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Solution

The fourth proportional to 340.07, 509.81 and 123.50 is: 185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.07 : 509.81 = 123.50 : x
  2. Step 2: Convert to fraction form
    340.07/509.81 = 123.50/x
  3. Step 3: Cross multiply
    340.07x = 509.81 × 123.50
  4. Step 4: Simplify right side
    340.07x = 62,961.54
  5. Step 5: Solve for x
    x = 62,961.54/340.07
  6. Step 6: Final answer
    x = 185.14

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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.