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Finding the Fourth Proportional to 2,049.76, 3,074.64 and 510.76

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Solution

The fourth proportional to 2,049.76, 3,074.64 and 510.76 is: 766.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,049.76 : 3,074.64 = 510.76 : x
  2. Step 2: Convert to fraction form
    2,049.76/3,074.64 = 510.76/x
  3. Step 3: Cross multiply
    2,049.76x = 3,074.64 × 510.76
  4. Step 4: Simplify right side
    2,049.76x = 1,570,403.13
  5. Step 5: Solve for x
    x = 1,570,403.13/2,049.76
  6. Step 6: Final answer
    x = 766.14

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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.