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Finding the Fourth Proportional to 1,475.57, 2,212.60 and 654.09

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Solution

The fourth proportional to 1,475.57, 2,212.60 and 654.09 is: 980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.57 : 2,212.60 = 654.09 : x
  2. Step 2: Convert to fraction form
    1,475.57/2,212.60 = 654.09/x
  3. Step 3: Cross multiply
    1,475.57x = 2,212.60 × 654.09
  4. Step 4: Simplify right side
    1,475.57x = 1,447,239.53
  5. Step 5: Solve for x
    x = 1,447,239.53/1,475.57
  6. Step 6: Final answer
    x = 980.80

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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.