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Finding the Fourth Proportional to 240, 360.24 and 126.24

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Solution

The fourth proportional to 240, 360.24 and 126.24 is: 189.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    240 : 360.24 = 126.24 : x
  2. Step 2: Convert to fraction form
    240/360.24 = 126.24/x
  3. Step 3: Cross multiply
    240x = 360.24 × 126.24
  4. Step 4: Simplify right side
    240x = 45,476.70
  5. Step 5: Solve for x
    x = 45,476.70/240
  6. Step 6: Final answer
    x = 189.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 241, 361.74 and 127.24
Similar ratio
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1.5x scale

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.