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Finding the Fourth Proportional to 1,982.95, 2,973.33 and 666.01

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Solution

The fourth proportional to 1,982.95, 2,973.33 and 666.01 is: 998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.95 : 2,973.33 = 666.01 : x
  2. Step 2: Convert to fraction form
    1,982.95/2,973.33 = 666.01/x
  3. Step 3: Cross multiply
    1,982.95x = 2,973.33 × 666.01
  4. Step 4: Simplify right side
    1,982.95x = 1,980,267.51
  5. Step 5: Solve for x
    x = 1,980,267.51/1,982.95
  6. Step 6: Final answer
    x = 998.65

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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.