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Finding the Fourth Proportional to 554.90, 828.05 and 493.55

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Solution

The fourth proportional to 554.90, 828.05 and 493.55 is: 736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.90 : 828.05 = 493.55 : x
  2. Step 2: Convert to fraction form
    554.90/828.05 = 493.55/x
  3. Step 3: Cross multiply
    554.90x = 828.05 × 493.55
  4. Step 4: Simplify right side
    554.90x = 408,684.08
  5. Step 5: Solve for x
    x = 408,684.08/554.90
  6. Step 6: Final answer
    x = 736.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.