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Finding the Fourth Proportional to 398.45, 598.06 and 376.53

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Solution

The fourth proportional to 398.45, 598.06 and 376.53 is: 565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.45 : 598.06 = 376.53 : x
  2. Step 2: Convert to fraction form
    398.45/598.06 = 376.53/x
  3. Step 3: Cross multiply
    398.45x = 598.06 × 376.53
  4. Step 4: Simplify right side
    398.45x = 225,187.53
  5. Step 5: Solve for x
    x = 225,187.53/398.45
  6. Step 6: Final answer
    x = 565.16

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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.