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Finding the Fourth Proportional to 713.01, 983.73 and 447.69

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Solution

The fourth proportional to 713.01, 983.73 and 447.69 is: 617.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.01 : 983.73 = 447.69 : x
  2. Step 2: Convert to fraction form
    713.01/983.73 = 447.69/x
  3. Step 3: Cross multiply
    713.01x = 983.73 × 447.69
  4. Step 4: Simplify right side
    713.01x = 440,406.08
  5. Step 5: Solve for x
    x = 440,406.08/713.01
  6. Step 6: Final answer
    x = 617.67

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1.5x scale

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.