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Finding the Fourth Proportional to 406.08, 611.29 and 368.36

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Solution

The fourth proportional to 406.08, 611.29 and 368.36 is: 554.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.08 : 611.29 = 368.36 : x
  2. Step 2: Convert to fraction form
    406.08/611.29 = 368.36/x
  3. Step 3: Cross multiply
    406.08x = 611.29 × 368.36
  4. Step 4: Simplify right side
    406.08x = 225,174.48
  5. Step 5: Solve for x
    x = 225,174.48/406.08
  6. Step 6: Final answer
    x = 554.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.