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Finding the Fourth Proportional to 1,762.71, 2,644.08 and 722.45

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Solution

The fourth proportional to 1,762.71, 2,644.08 and 722.45 is: 1,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.71 : 2,644.08 = 722.45 : x
  2. Step 2: Convert to fraction form
    1,762.71/2,644.08 = 722.45/x
  3. Step 3: Cross multiply
    1,762.71x = 2,644.08 × 722.45
  4. Step 4: Simplify right side
    1,762.71x = 1,910,202.38
  5. Step 5: Solve for x
    x = 1,910,202.38/1,762.71
  6. Step 6: Final answer
    x = 1,083.67

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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.