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Finding the Fourth Proportional to 530.86, 796.22 and 140.90

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Solution

The fourth proportional to 530.86, 796.22 and 140.90 is: 211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.86 : 796.22 = 140.90 : x
  2. Step 2: Convert to fraction form
    530.86/796.22 = 140.90/x
  3. Step 3: Cross multiply
    530.86x = 796.22 × 140.90
  4. Step 4: Simplify right side
    530.86x = 112,187.40
  5. Step 5: Solve for x
    x = 112,187.40/530.86
  6. Step 6: Final answer
    x = 211.33

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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.