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Finding the Fourth Proportional to 530.43, 795.63 and 165.21

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Solution

The fourth proportional to 530.43, 795.63 and 165.21 is: 247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.43 : 795.63 = 165.21 : x
  2. Step 2: Convert to fraction form
    530.43/795.63 = 165.21/x
  3. Step 3: Cross multiply
    530.43x = 795.63 × 165.21
  4. Step 4: Simplify right side
    530.43x = 131,446.03
  5. Step 5: Solve for x
    x = 131,446.03/530.43
  6. Step 6: Final answer
    x = 247.81

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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.