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Finding the Fourth Proportional to 653.55, 896.37 and 618.25

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Solution

The fourth proportional to 653.55, 896.37 and 618.25 is: 847.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.55 : 896.37 = 618.25 : x
  2. Step 2: Convert to fraction form
    653.55/896.37 = 618.25/x
  3. Step 3: Cross multiply
    653.55x = 896.37 × 618.25
  4. Step 4: Simplify right side
    653.55x = 554,180.75
  5. Step 5: Solve for x
    x = 554,180.75/653.55
  6. Step 6: Final answer
    x = 847.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.