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Finding the Fourth Proportional to 534.69, 737.87 and 310.64

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Solution

The fourth proportional to 534.69, 737.87 and 310.64 is: 428.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.69 : 737.87 = 310.64 : x
  2. Step 2: Convert to fraction form
    534.69/737.87 = 310.64/x
  3. Step 3: Cross multiply
    534.69x = 737.87 × 310.64
  4. Step 4: Simplify right side
    534.69x = 229,206.69
  5. Step 5: Solve for x
    x = 229,206.69/534.69
  6. Step 6: Final answer
    x = 428.67

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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.