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Finding the Fourth Proportional to 719.06, 993.29 and 563.67

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Solution

The fourth proportional to 719.06, 993.29 and 563.67 is: 778.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.06 : 993.29 = 563.67 : x
  2. Step 2: Convert to fraction form
    719.06/993.29 = 563.67/x
  3. Step 3: Cross multiply
    719.06x = 993.29 × 563.67
  4. Step 4: Simplify right side
    719.06x = 559,884.96
  5. Step 5: Solve for x
    x = 559,884.96/719.06
  6. Step 6: Final answer
    x = 778.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.