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Finding the Fourth Proportional to 933.67, 1,400.91 and 625.60

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Solution

The fourth proportional to 933.67, 1,400.91 and 625.60 is: 938.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.67 : 1,400.91 = 625.60 : x
  2. Step 2: Convert to fraction form
    933.67/1,400.91 = 625.60/x
  3. Step 3: Cross multiply
    933.67x = 1,400.91 × 625.60
  4. Step 4: Simplify right side
    933.67x = 876,409.30
  5. Step 5: Solve for x
    x = 876,409.30/933.67
  6. Step 6: Final answer
    x = 938.67

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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.