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Finding the Fourth Proportional to 383.35, 575.30 and 140.08

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Solution

The fourth proportional to 383.35, 575.30 and 140.08 is: 210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.35 : 575.30 = 140.08 : x
  2. Step 2: Convert to fraction form
    383.35/575.30 = 140.08/x
  3. Step 3: Cross multiply
    383.35x = 575.30 × 140.08
  4. Step 4: Simplify right side
    383.35x = 80,588.02
  5. Step 5: Solve for x
    x = 80,588.02/383.35
  6. Step 6: Final answer
    x = 210.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.