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Finding the Fourth Proportional to 579.62, 869.58 and 168.75

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Solution

The fourth proportional to 579.62, 869.58 and 168.75 is: 253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.62 : 869.58 = 168.75 : x
  2. Step 2: Convert to fraction form
    579.62/869.58 = 168.75/x
  3. Step 3: Cross multiply
    579.62x = 869.58 × 168.75
  4. Step 4: Simplify right side
    579.62x = 146,741.63
  5. Step 5: Solve for x
    x = 146,741.63/579.62
  6. Step 6: Final answer
    x = 253.17

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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.