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Finding the Fourth Proportional to 403.36, 553.82 and 340.93

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Solution

The fourth proportional to 403.36, 553.82 and 340.93 is: 468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.36 : 553.82 = 340.93 : x
  2. Step 2: Convert to fraction form
    403.36/553.82 = 340.93/x
  3. Step 3: Cross multiply
    403.36x = 553.82 × 340.93
  4. Step 4: Simplify right side
    403.36x = 188,813.85
  5. Step 5: Solve for x
    x = 188,813.85/403.36
  6. Step 6: Final answer
    x = 468.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.