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Finding the Fourth Proportional to 633.83, 873.99 and 486.81

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Solution

The fourth proportional to 633.83, 873.99 and 486.81 is: 671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.83 : 873.99 = 486.81 : x
  2. Step 2: Convert to fraction form
    633.83/873.99 = 486.81/x
  3. Step 3: Cross multiply
    633.83x = 873.99 × 486.81
  4. Step 4: Simplify right side
    633.83x = 425,467.07
  5. Step 5: Solve for x
    x = 425,467.07/633.83
  6. Step 6: Final answer
    x = 671.27

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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.