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Finding the Fourth Proportional to 1,177.50, 1,625.05 and 653.57

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Solution

The fourth proportional to 1,177.50, 1,625.05 and 653.57 is: 901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.50 : 1,625.05 = 653.57 : x
  2. Step 2: Convert to fraction form
    1,177.50/1,625.05 = 653.57/x
  3. Step 3: Cross multiply
    1,177.50x = 1,625.05 × 653.57
  4. Step 4: Simplify right side
    1,177.50x = 1,062,072.54
  5. Step 5: Solve for x
    x = 1,062,072.54/1,177.50
  6. Step 6: Final answer
    x = 901.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.