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Finding the Fourth Proportional to 2,310.61, 3,465.41 and 666.80

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Solution

The fourth proportional to 2,310.61, 3,465.41 and 666.80 is: 1,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.61 : 3,465.41 = 666.80 : x
  2. Step 2: Convert to fraction form
    2,310.61/3,465.41 = 666.80/x
  3. Step 3: Cross multiply
    2,310.61x = 3,465.41 × 666.80
  4. Step 4: Simplify right side
    2,310.61x = 2,310,732.89
  5. Step 5: Solve for x
    x = 2,310,732.89/2,310.61
  6. Step 6: Final answer
    x = 1,000.05

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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.