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Finding the Fourth Proportional to 374.54, 515.66 and 339.26

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Solution

The fourth proportional to 374.54, 515.66 and 339.26 is: 467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.54 : 515.66 = 339.26 : x
  2. Step 2: Convert to fraction form
    374.54/515.66 = 339.26/x
  3. Step 3: Cross multiply
    374.54x = 515.66 × 339.26
  4. Step 4: Simplify right side
    374.54x = 174,942.81
  5. Step 5: Solve for x
    x = 174,942.81/374.54
  6. Step 6: Final answer
    x = 467.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.