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Finding the Fourth Proportional to 1,282.10, 1,924.02 and 666.09

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Solution

The fourth proportional to 1,282.10, 1,924.02 and 666.09 is: 999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.10 : 1,924.02 = 666.09 : x
  2. Step 2: Convert to fraction form
    1,282.10/1,924.02 = 666.09/x
  3. Step 3: Cross multiply
    1,282.10x = 1,924.02 × 666.09
  4. Step 4: Simplify right side
    1,282.10x = 1,281,570.48
  5. Step 5: Solve for x
    x = 1,281,570.48/1,282.10
  6. Step 6: Final answer
    x = 999.59

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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.