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Finding the Fourth Proportional to 554.40, 765.34 and 377.46

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Solution

The fourth proportional to 554.40, 765.34 and 377.46 is: 521.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.40 : 765.34 = 377.46 : x
  2. Step 2: Convert to fraction form
    554.40/765.34 = 377.46/x
  3. Step 3: Cross multiply
    554.40x = 765.34 × 377.46
  4. Step 4: Simplify right side
    554.40x = 288,884.29
  5. Step 5: Solve for x
    x = 288,884.29/554.40
  6. Step 6: Final answer
    x = 521.08

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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.