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Finding the Fourth Proportional to 438.22, 605.20 and 435.18

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Solution

The fourth proportional to 438.22, 605.20 and 435.18 is: 601.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.22 : 605.20 = 435.18 : x
  2. Step 2: Convert to fraction form
    438.22/605.20 = 435.18/x
  3. Step 3: Cross multiply
    438.22x = 605.20 × 435.18
  4. Step 4: Simplify right side
    438.22x = 263,370.94
  5. Step 5: Solve for x
    x = 263,370.94/438.22
  6. Step 6: Final answer
    x = 601.00

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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.