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Finding the Fourth Proportional to 573.05, 859.73 and 353.90

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Solution

The fourth proportional to 573.05, 859.73 and 353.90 is: 530.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.05 : 859.73 = 353.90 : x
  2. Step 2: Convert to fraction form
    573.05/859.73 = 353.90/x
  3. Step 3: Cross multiply
    573.05x = 859.73 × 353.90
  4. Step 4: Simplify right side
    573.05x = 304,252.38
  5. Step 5: Solve for x
    x = 304,252.38/573.05
  6. Step 6: Final answer
    x = 530.94

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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.