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Finding the Fourth Proportional to 1,685.03, 2,526.90 and 514.67

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Solution

The fourth proportional to 1,685.03, 2,526.90 and 514.67 is: 771.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.03 : 2,526.90 = 514.67 : x
  2. Step 2: Convert to fraction form
    1,685.03/2,526.90 = 514.67/x
  3. Step 3: Cross multiply
    1,685.03x = 2,526.90 × 514.67
  4. Step 4: Simplify right side
    1,685.03x = 1,300,519.27
  5. Step 5: Solve for x
    x = 1,300,519.27/1,685.03
  6. Step 6: Final answer
    x = 771.81

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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.