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Finding the Fourth Proportional to 554.20, 765.36 and 377.93

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Solution

The fourth proportional to 554.20, 765.36 and 377.93 is: 521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.20 : 765.36 = 377.93 : x
  2. Step 2: Convert to fraction form
    554.20/765.36 = 377.93/x
  3. Step 3: Cross multiply
    554.20x = 765.36 × 377.93
  4. Step 4: Simplify right side
    554.20x = 289,254.42
  5. Step 5: Solve for x
    x = 289,254.42/554.20
  6. Step 6: Final answer
    x = 521.93

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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.