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Finding the Fourth Proportional to 383.69, 572.57 and 342.67

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Solution

The fourth proportional to 383.69, 572.57 and 342.67 is: 511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.69 : 572.57 = 342.67 : x
  2. Step 2: Convert to fraction form
    383.69/572.57 = 342.67/x
  3. Step 3: Cross multiply
    383.69x = 572.57 × 342.67
  4. Step 4: Simplify right side
    383.69x = 196,200.85
  5. Step 5: Solve for x
    x = 196,200.85/383.69
  6. Step 6: Final answer
    x = 511.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.