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Finding the Fourth Proportional to 573.12, 860.09 and 429.22

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Solution

The fourth proportional to 573.12, 860.09 and 429.22 is: 644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.12 : 860.09 = 429.22 : x
  2. Step 2: Convert to fraction form
    573.12/860.09 = 429.22/x
  3. Step 3: Cross multiply
    573.12x = 860.09 × 429.22
  4. Step 4: Simplify right side
    573.12x = 369,167.83
  5. Step 5: Solve for x
    x = 369,167.83/573.12
  6. Step 6: Final answer
    x = 644.14

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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.