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Finding the Fourth Proportional to 563.56, 775.78 and 493.49

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Solution

The fourth proportional to 563.56, 775.78 and 493.49 is: 679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.56 : 775.78 = 493.49 : x
  2. Step 2: Convert to fraction form
    563.56/775.78 = 493.49/x
  3. Step 3: Cross multiply
    563.56x = 775.78 × 493.49
  4. Step 4: Simplify right side
    563.56x = 382,840.38
  5. Step 5: Solve for x
    x = 382,840.38/563.56
  6. Step 6: Final answer
    x = 679.33

Related Problems

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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.