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Finding the Fourth Proportional to 403.97, 556.94 and 348.59

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Solution

The fourth proportional to 403.97, 556.94 and 348.59 is: 480.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.97 : 556.94 = 348.59 : x
  2. Step 2: Convert to fraction form
    403.97/556.94 = 348.59/x
  3. Step 3: Cross multiply
    403.97x = 556.94 × 348.59
  4. Step 4: Simplify right side
    403.97x = 194,139.19
  5. Step 5: Solve for x
    x = 194,139.19/403.97
  6. Step 6: Final answer
    x = 480.58

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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.