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Finding the Fourth Proportional to 438.76, 605.22 and 270.68

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Solution

The fourth proportional to 438.76, 605.22 and 270.68 is: 373.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.76 : 605.22 = 270.68 : x
  2. Step 2: Convert to fraction form
    438.76/605.22 = 270.68/x
  3. Step 3: Cross multiply
    438.76x = 605.22 × 270.68
  4. Step 4: Simplify right side
    438.76x = 163,820.95
  5. Step 5: Solve for x
    x = 163,820.95/438.76
  6. Step 6: Final answer
    x = 373.37

Related Problems

Find fourth proportional to 219.38, 302.61 and 135.34
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Double scale
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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.