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Finding the Fourth Proportional to 554.94, 765.57 and 321.93

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Solution

The fourth proportional to 554.94, 765.57 and 321.93 is: 444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.94 : 765.57 = 321.93 : x
  2. Step 2: Convert to fraction form
    554.94/765.57 = 321.93/x
  3. Step 3: Cross multiply
    554.94x = 765.57 × 321.93
  4. Step 4: Simplify right side
    554.94x = 246,459.95
  5. Step 5: Solve for x
    x = 246,459.95/554.94
  6. Step 6: Final answer
    x = 444.12

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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.