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Finding the Fourth Proportional to 422.77, 583.54 and 245.81

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Solution

The fourth proportional to 422.77, 583.54 and 245.81 is: 339.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.77 : 583.54 = 245.81 : x
  2. Step 2: Convert to fraction form
    422.77/583.54 = 245.81/x
  3. Step 3: Cross multiply
    422.77x = 583.54 × 245.81
  4. Step 4: Simplify right side
    422.77x = 143,437.05
  5. Step 5: Solve for x
    x = 143,437.05/422.77
  6. Step 6: Final answer
    x = 339.28

Related Problems

Find fourth proportional to 211.38, 291.77 and 122.90
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Double scale
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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.