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Finding the Fourth Proportional to 1,475.48, 2,213.73 and 653.82

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Solution

The fourth proportional to 1,475.48, 2,213.73 and 653.82 is: 980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.48 : 2,213.73 = 653.82 : x
  2. Step 2: Convert to fraction form
    1,475.48/2,213.73 = 653.82/x
  3. Step 3: Cross multiply
    1,475.48x = 2,213.73 × 653.82
  4. Step 4: Simplify right side
    1,475.48x = 1,447,380.95
  5. Step 5: Solve for x
    x = 1,447,380.95/1,475.48
  6. Step 6: Final answer
    x = 980.96

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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.