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Finding the Fourth Proportional to 762.77, 1,052.63 and 426.67

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Solution

The fourth proportional to 762.77, 1,052.63 and 426.67 is: 588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.77 : 1,052.63 = 426.67 : x
  2. Step 2: Convert to fraction form
    762.77/1,052.63 = 426.67/x
  3. Step 3: Cross multiply
    762.77x = 1,052.63 × 426.67
  4. Step 4: Simplify right side
    762.77x = 449,125.64
  5. Step 5: Solve for x
    x = 449,125.64/762.77
  6. Step 6: Final answer
    x = 588.81

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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.