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Finding the Fourth Proportional to 1,227.34, 1,838.80 and 569.80

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Solution

The fourth proportional to 1,227.34, 1,838.80 and 569.80 is: 853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.34 : 1,838.80 = 569.80 : x
  2. Step 2: Convert to fraction form
    1,227.34/1,838.80 = 569.80/x
  3. Step 3: Cross multiply
    1,227.34x = 1,838.80 × 569.80
  4. Step 4: Simplify right side
    1,227.34x = 1,047,748.24
  5. Step 5: Solve for x
    x = 1,047,748.24/1,227.34
  6. Step 6: Final answer
    x = 853.67

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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.