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Finding the Fourth Proportional to 1,531.54, 2,297.01 and 653.78

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Solution

The fourth proportional to 1,531.54, 2,297.01 and 653.78 is: 980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.54 : 2,297.01 = 653.78 : x
  2. Step 2: Convert to fraction form
    1,531.54/2,297.01 = 653.78/x
  3. Step 3: Cross multiply
    1,531.54x = 2,297.01 × 653.78
  4. Step 4: Simplify right side
    1,531.54x = 1,501,737.25
  5. Step 5: Solve for x
    x = 1,501,737.25/1,531.54
  6. Step 6: Final answer
    x = 980.54

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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.