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Finding the Fourth Proportional to 401.99, 554.19 and 370.68

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Solution

The fourth proportional to 401.99, 554.19 and 370.68 is: 511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.99 : 554.19 = 370.68 : x
  2. Step 2: Convert to fraction form
    401.99/554.19 = 370.68/x
  3. Step 3: Cross multiply
    401.99x = 554.19 × 370.68
  4. Step 4: Simplify right side
    401.99x = 205,427.15
  5. Step 5: Solve for x
    x = 205,427.15/401.99
  6. Step 6: Final answer
    x = 511.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.