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Finding the Fourth Proportional to 579.30, 866.79 and 471.30

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Solution

The fourth proportional to 579.30, 866.79 and 471.30 is: 705.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.30 : 866.79 = 471.30 : x
  2. Step 2: Convert to fraction form
    579.30/866.79 = 471.30/x
  3. Step 3: Cross multiply
    579.30x = 866.79 × 471.30
  4. Step 4: Simplify right side
    579.30x = 408,518.13
  5. Step 5: Solve for x
    x = 408,518.13/579.30
  6. Step 6: Final answer
    x = 705.19

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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.