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Finding the Fourth Proportional to 554.50, 765.56 and 344.76

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Solution

The fourth proportional to 554.50, 765.56 and 344.76 is: 475.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.50 : 765.56 = 344.76 : x
  2. Step 2: Convert to fraction form
    554.50/765.56 = 344.76/x
  3. Step 3: Cross multiply
    554.50x = 765.56 × 344.76
  4. Step 4: Simplify right side
    554.50x = 263,932.94
  5. Step 5: Solve for x
    x = 263,932.94/554.50
  6. Step 6: Final answer
    x = 475.99

Related Problems

Find fourth proportional to 277.25, 382.78 and 172.38
Half scale
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Double scale
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Similar ratio
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1.5x scale

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.