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Finding the Fourth Proportional to 573.70, 859.18 and 313.31

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Solution

The fourth proportional to 573.70, 859.18 and 313.31 is: 469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.70 : 859.18 = 313.31 : x
  2. Step 2: Convert to fraction form
    573.70/859.18 = 313.31/x
  3. Step 3: Cross multiply
    573.70x = 859.18 × 313.31
  4. Step 4: Simplify right side
    573.70x = 269,185.63
  5. Step 5: Solve for x
    x = 269,185.63/573.70
  6. Step 6: Final answer
    x = 469.21

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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.