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Finding the Fourth Proportional to 719.79, 993.44 and 425.07

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Solution

The fourth proportional to 719.79, 993.44 and 425.07 is: 586.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.79 : 993.44 = 425.07 : x
  2. Step 2: Convert to fraction form
    719.79/993.44 = 425.07/x
  3. Step 3: Cross multiply
    719.79x = 993.44 × 425.07
  4. Step 4: Simplify right side
    719.79x = 422,279.42
  5. Step 5: Solve for x
    x = 422,279.42/719.79
  6. Step 6: Final answer
    x = 586.67

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