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Finding the Fourth Proportional to 400.23, 598.68 and 355.14

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Solution

The fourth proportional to 400.23, 598.68 and 355.14 is: 531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.23 : 598.68 = 355.14 : x
  2. Step 2: Convert to fraction form
    400.23/598.68 = 355.14/x
  3. Step 3: Cross multiply
    400.23x = 598.68 × 355.14
  4. Step 4: Simplify right side
    400.23x = 212,615.22
  5. Step 5: Solve for x
    x = 212,615.22/400.23
  6. Step 6: Final answer
    x = 531.23

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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.