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Finding the Fourth Proportional to 401.36, 602.03 and 340.91

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Solution

The fourth proportional to 401.36, 602.03 and 340.91 is: 511.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.36 : 602.03 = 340.91 : x
  2. Step 2: Convert to fraction form
    401.36/602.03 = 340.91/x
  3. Step 3: Cross multiply
    401.36x = 602.03 × 340.91
  4. Step 4: Simplify right side
    401.36x = 205,238.15
  5. Step 5: Solve for x
    x = 205,238.15/401.36
  6. Step 6: Final answer
    x = 511.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.