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Finding the Fourth Proportional to 398.23, 599.68 and 347.48

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Solution

The fourth proportional to 398.23, 599.68 and 347.48 is: 523.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.23 : 599.68 = 347.48 : x
  2. Step 2: Convert to fraction form
    398.23/599.68 = 347.48/x
  3. Step 3: Cross multiply
    398.23x = 599.68 × 347.48
  4. Step 4: Simplify right side
    398.23x = 208,373.81
  5. Step 5: Solve for x
    x = 208,373.81/398.23
  6. Step 6: Final answer
    x = 523.25

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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.