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Finding the Fourth Proportional to 383.66, 529.34 and 290.37

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Solution

The fourth proportional to 383.66, 529.34 and 290.37 is: 400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.66 : 529.34 = 290.37 : x
  2. Step 2: Convert to fraction form
    383.66/529.34 = 290.37/x
  3. Step 3: Cross multiply
    383.66x = 529.34 × 290.37
  4. Step 4: Simplify right side
    383.66x = 153,703.00
  5. Step 5: Solve for x
    x = 153,703.00/383.66
  6. Step 6: Final answer
    x = 400.63

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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.