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Finding the Fourth Proportional to 573.13, 859.70 and 140.29

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Solution

The fourth proportional to 573.13, 859.70 and 140.29 is: 210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.13 : 859.70 = 140.29 : x
  2. Step 2: Convert to fraction form
    573.13/859.70 = 140.29/x
  3. Step 3: Cross multiply
    573.13x = 859.70 × 140.29
  4. Step 4: Simplify right side
    573.13x = 120,607.31
  5. Step 5: Solve for x
    x = 120,607.31/573.13
  6. Step 6: Final answer
    x = 210.44

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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.