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Finding the Fourth Proportional to 693.98, 1,040.96 and 231.67

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Solution

The fourth proportional to 693.98, 1,040.96 and 231.67 is: 347.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.98 : 1,040.96 = 231.67 : x
  2. Step 2: Convert to fraction form
    693.98/1,040.96 = 231.67/x
  3. Step 3: Cross multiply
    693.98x = 1,040.96 × 231.67
  4. Step 4: Simplify right side
    693.98x = 241,157.18
  5. Step 5: Solve for x
    x = 241,157.18/693.98
  6. Step 6: Final answer
    x = 347.50

Related Problems

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Half scale
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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.