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Finding the Fourth Proportional to 775.27, 1,161.06 and 630.67

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Solution

The fourth proportional to 775.27, 1,161.06 and 630.67 is: 944.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    775.27 : 1,161.06 = 630.67 : x
  2. Step 2: Convert to fraction form
    775.27/1,161.06 = 630.67/x
  3. Step 3: Cross multiply
    775.27x = 1,161.06 × 630.67
  4. Step 4: Simplify right side
    775.27x = 732,245.71
  5. Step 5: Solve for x
    x = 732,245.71/775.27
  6. Step 6: Final answer
    x = 944.50

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1.5x scale

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.