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Finding the Fourth Proportional to 393.47, 541.74 and 334.32

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Solution

The fourth proportional to 393.47, 541.74 and 334.32 is: 460.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.47 : 541.74 = 334.32 : x
  2. Step 2: Convert to fraction form
    393.47/541.74 = 334.32/x
  3. Step 3: Cross multiply
    393.47x = 541.74 × 334.32
  4. Step 4: Simplify right side
    393.47x = 181,114.52
  5. Step 5: Solve for x
    x = 181,114.52/393.47
  6. Step 6: Final answer
    x = 460.31

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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.