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Finding the Fourth Proportional to 589.52, 813.21 and 547.81

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Solution

The fourth proportional to 589.52, 813.21 and 547.81 is: 755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.52 : 813.21 = 547.81 : x
  2. Step 2: Convert to fraction form
    589.52/813.21 = 547.81/x
  3. Step 3: Cross multiply
    589.52x = 813.21 × 547.81
  4. Step 4: Simplify right side
    589.52x = 445,480.50
  5. Step 5: Solve for x
    x = 445,480.50/589.52
  6. Step 6: Final answer
    x = 755.67

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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.