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Finding the Fourth Proportional to 1,531.73, 2,296.66 and 653.74

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Solution

The fourth proportional to 1,531.73, 2,296.66 and 653.74 is: 980.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.73 : 2,296.66 = 653.74 : x
  2. Step 2: Convert to fraction form
    1,531.73/2,296.66 = 653.74/x
  3. Step 3: Cross multiply
    1,531.73x = 2,296.66 × 653.74
  4. Step 4: Simplify right side
    1,531.73x = 1,501,418.51
  5. Step 5: Solve for x
    x = 1,501,418.51/1,531.73
  6. Step 6: Final answer
    x = 980.21

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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.