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Finding the Fourth Proportional to 554.75, 765.62 and 306.14

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Solution

The fourth proportional to 554.75, 765.62 and 306.14 is: 422.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.75 : 765.62 = 306.14 : x
  2. Step 2: Convert to fraction form
    554.75/765.62 = 306.14/x
  3. Step 3: Cross multiply
    554.75x = 765.62 × 306.14
  4. Step 4: Simplify right side
    554.75x = 234,381.55
  5. Step 5: Solve for x
    x = 234,381.55/554.75
  6. Step 6: Final answer
    x = 422.50

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Find fourth proportional to 277.38, 382.81 and 153.07
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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.