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Finding the Fourth Proportional to 243.57, 335.12 and 236.76

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Solution

The fourth proportional to 243.57, 335.12 and 236.76 is: 325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.57 : 335.12 = 236.76 : x
  2. Step 2: Convert to fraction form
    243.57/335.12 = 236.76/x
  3. Step 3: Cross multiply
    243.57x = 335.12 × 236.76
  4. Step 4: Simplify right side
    243.57x = 79,343.01
  5. Step 5: Solve for x
    x = 79,343.01/243.57
  6. Step 6: Final answer
    x = 325.75

Related Problems

Find fourth proportional to 121.79, 167.56 and 118.38
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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.