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Finding the Fourth Proportional to 635.52, 873.52 and 561.44

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Solution

The fourth proportional to 635.52, 873.52 and 561.44 is: 771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.52 : 873.52 = 561.44 : x
  2. Step 2: Convert to fraction form
    635.52/873.52 = 561.44/x
  3. Step 3: Cross multiply
    635.52x = 873.52 × 561.44
  4. Step 4: Simplify right side
    635.52x = 490,429.07
  5. Step 5: Solve for x
    x = 490,429.07/635.52
  6. Step 6: Final answer
    x = 771.70

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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.