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Finding the Fourth Proportional to 746.99, 1,119.68 and 400.07

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Solution

The fourth proportional to 746.99, 1,119.68 and 400.07 is: 599.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.99 : 1,119.68 = 400.07 : x
  2. Step 2: Convert to fraction form
    746.99/1,119.68 = 400.07/x
  3. Step 3: Cross multiply
    746.99x = 1,119.68 × 400.07
  4. Step 4: Simplify right side
    746.99x = 447,948.38
  5. Step 5: Solve for x
    x = 447,948.38/746.99
  6. Step 6: Final answer
    x = 599.67

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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.