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Finding the Fourth Proportional to 401.80, 575.03 and 401.80

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Solution

The fourth proportional to 401.80, 575.03 and 401.80 is: 575.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.80 : 575.03 = 401.80 : x
  2. Step 2: Convert to fraction form
    401.80/575.03 = 401.80/x
  3. Step 3: Cross multiply
    401.80x = 575.03 × 401.80
  4. Step 4: Simplify right side
    401.80x = 231,047.05
  5. Step 5: Solve for x
    x = 231,047.05/401.80
  6. Step 6: Final answer
    x = 575.03

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.