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Finding the Fourth Proportional to 628.34, 942.21 and 238.41

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Solution

The fourth proportional to 628.34, 942.21 and 238.41 is: 357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.34 : 942.21 = 238.41 : x
  2. Step 2: Convert to fraction form
    628.34/942.21 = 238.41/x
  3. Step 3: Cross multiply
    628.34x = 942.21 × 238.41
  4. Step 4: Simplify right side
    628.34x = 224,632.29
  5. Step 5: Solve for x
    x = 224,632.29/628.34
  6. Step 6: Final answer
    x = 357.50

Related Problems

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Double scale
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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.