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Finding the Fourth Proportional to 563.56, 777.66 and 330.76

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Solution

The fourth proportional to 563.56, 777.66 and 330.76 is: 456.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.56 : 777.66 = 330.76 : x
  2. Step 2: Convert to fraction form
    563.56/777.66 = 330.76/x
  3. Step 3: Cross multiply
    563.56x = 777.66 × 330.76
  4. Step 4: Simplify right side
    563.56x = 257,218.82
  5. Step 5: Solve for x
    x = 257,218.82/563.56
  6. Step 6: Final answer
    x = 456.42

Related Problems

Find fourth proportional to 281.78, 388.83 and 165.38
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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.