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Finding the Fourth Proportional to 2,007.70, 3,011.21 and 546.86

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Solution

The fourth proportional to 2,007.70, 3,011.21 and 546.86 is: 820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.70 : 3,011.21 = 546.86 : x
  2. Step 2: Convert to fraction form
    2,007.70/3,011.21 = 546.86/x
  3. Step 3: Cross multiply
    2,007.70x = 3,011.21 × 546.86
  4. Step 4: Simplify right side
    2,007.70x = 1,646,703.28
  5. Step 5: Solve for x
    x = 1,646,703.28/2,007.70
  6. Step 6: Final answer
    x = 820.19

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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.