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Finding the Fourth Proportional to 1,471.41, 2,207.68 and 649.10

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Solution

The fourth proportional to 1,471.41, 2,207.68 and 649.10 is: 973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.41 : 2,207.68 = 649.10 : x
  2. Step 2: Convert to fraction form
    1,471.41/2,207.68 = 649.10/x
  3. Step 3: Cross multiply
    1,471.41x = 2,207.68 × 649.10
  4. Step 4: Simplify right side
    1,471.41x = 1,433,008.98
  5. Step 5: Solve for x
    x = 1,433,008.98/1,471.41
  6. Step 6: Final answer
    x = 973.90

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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.