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Finding the Fourth Proportional to 554.15, 764.06 and 459.65

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Solution

The fourth proportional to 554.15, 764.06 and 459.65 is: 633.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.15 : 764.06 = 459.65 : x
  2. Step 2: Convert to fraction form
    554.15/764.06 = 459.65/x
  3. Step 3: Cross multiply
    554.15x = 764.06 × 459.65
  4. Step 4: Simplify right side
    554.15x = 351,194.06
  5. Step 5: Solve for x
    x = 351,194.06/554.15
  6. Step 6: Final answer
    x = 633.76

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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.