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Finding the Fourth Proportional to 633.25, 871.95 and 554.12

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Solution

The fourth proportional to 633.25, 871.95 and 554.12 is: 762.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.25 : 871.95 = 554.12 : x
  2. Step 2: Convert to fraction form
    633.25/871.95 = 554.12/x
  3. Step 3: Cross multiply
    633.25x = 871.95 × 554.12
  4. Step 4: Simplify right side
    633.25x = 483,160.35
  5. Step 5: Solve for x
    x = 483,160.35/633.25
  6. Step 6: Final answer
    x = 762.98

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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.