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Finding the Fourth Proportional to 398.13, 597.40 and 368.06

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Solution

The fourth proportional to 398.13, 597.40 and 368.06 is: 552.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.13 : 597.40 = 368.06 : x
  2. Step 2: Convert to fraction form
    398.13/597.40 = 368.06/x
  3. Step 3: Cross multiply
    398.13x = 597.40 × 368.06
  4. Step 4: Simplify right side
    398.13x = 219,879.62
  5. Step 5: Solve for x
    x = 219,879.62/398.13
  6. Step 6: Final answer
    x = 552.28

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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.