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Finding the Fourth Proportional to 653.94, 985.60 and 563.72

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Solution

The fourth proportional to 653.94, 985.60 and 563.72 is: 849.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.94 : 985.60 = 563.72 : x
  2. Step 2: Convert to fraction form
    653.94/985.60 = 563.72/x
  3. Step 3: Cross multiply
    653.94x = 985.60 × 563.72
  4. Step 4: Simplify right side
    653.94x = 555,602.43
  5. Step 5: Solve for x
    x = 555,602.43/653.94
  6. Step 6: Final answer
    x = 849.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.