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Finding the Fourth Proportional to 1,971.50, 2,956.51 and 655.01

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Solution

The fourth proportional to 1,971.50, 2,956.51 and 655.01 is: 982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.50 : 2,956.51 = 655.01 : x
  2. Step 2: Convert to fraction form
    1,971.50/2,956.51 = 655.01/x
  3. Step 3: Cross multiply
    1,971.50x = 2,956.51 × 655.01
  4. Step 4: Simplify right side
    1,971.50x = 1,936,543.62
  5. Step 5: Solve for x
    x = 1,936,543.62/1,971.50
  6. Step 6: Final answer
    x = 982.27

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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.