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Finding the Fourth Proportional to 648.41, 972.61 and 237.67

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Solution

The fourth proportional to 648.41, 972.61 and 237.67 is: 356.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.41 : 972.61 = 237.67 : x
  2. Step 2: Convert to fraction form
    648.41/972.61 = 237.67/x
  3. Step 3: Cross multiply
    648.41x = 972.61 × 237.67
  4. Step 4: Simplify right side
    648.41x = 231,157.19
  5. Step 5: Solve for x
    x = 231,157.19/648.41
  6. Step 6: Final answer
    x = 356.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 649.41, 974.11 and 238.67
Similar ratio
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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.