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Finding the Fourth Proportional to 346.36, 518.46 and 259.18

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Solution

The fourth proportional to 346.36, 518.46 and 259.18 is: 387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.36 : 518.46 = 259.18 : x
  2. Step 2: Convert to fraction form
    346.36/518.46 = 259.18/x
  3. Step 3: Cross multiply
    346.36x = 518.46 × 259.18
  4. Step 4: Simplify right side
    346.36x = 134,374.46
  5. Step 5: Solve for x
    x = 134,374.46/346.36
  6. Step 6: Final answer
    x = 387.96

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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.