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Finding the Fourth Proportional to 346.24, 515.55 and 343.81

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Solution

The fourth proportional to 346.24, 515.55 and 343.81 is: 511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.24 : 515.55 = 343.81 : x
  2. Step 2: Convert to fraction form
    346.24/515.55 = 343.81/x
  3. Step 3: Cross multiply
    346.24x = 515.55 × 343.81
  4. Step 4: Simplify right side
    346.24x = 177,251.25
  5. Step 5: Solve for x
    x = 177,251.25/346.24
  6. Step 6: Final answer
    x = 511.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.