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Finding the Fourth Proportional to 632.72, 873.26 and 483.09

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Solution

The fourth proportional to 632.72, 873.26 and 483.09 is: 666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.72 : 873.26 = 483.09 : x
  2. Step 2: Convert to fraction form
    632.72/873.26 = 483.09/x
  3. Step 3: Cross multiply
    632.72x = 873.26 × 483.09
  4. Step 4: Simplify right side
    632.72x = 421,868.02
  5. Step 5: Solve for x
    x = 421,868.02/632.72
  6. Step 6: Final answer
    x = 666.76

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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.