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Finding the Fourth Proportional to 340.51, 511.38 and 259.93

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Solution

The fourth proportional to 340.51, 511.38 and 259.93 is: 390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.51 : 511.38 = 259.93 : x
  2. Step 2: Convert to fraction form
    340.51/511.38 = 259.93/x
  3. Step 3: Cross multiply
    340.51x = 511.38 × 259.93
  4. Step 4: Simplify right side
    340.51x = 132,923.00
  5. Step 5: Solve for x
    x = 132,923.00/340.51
  6. Step 6: Final answer
    x = 390.36

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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.