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Finding the Fourth Proportional to 554.80, 764.98 and 414.46

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Solution

The fourth proportional to 554.80, 764.98 and 414.46 is: 571.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.80 : 764.98 = 414.46 : x
  2. Step 2: Convert to fraction form
    554.80/764.98 = 414.46/x
  3. Step 3: Cross multiply
    554.80x = 764.98 × 414.46
  4. Step 4: Simplify right side
    554.80x = 317,053.61
  5. Step 5: Solve for x
    x = 317,053.61/554.80
  6. Step 6: Final answer
    x = 571.47

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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.