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Finding the Fourth Proportional to 568.98, 855.43 and 553.43

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Solution

The fourth proportional to 568.98, 855.43 and 553.43 is: 832.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.98 : 855.43 = 553.43 : x
  2. Step 2: Convert to fraction form
    568.98/855.43 = 553.43/x
  3. Step 3: Cross multiply
    568.98x = 855.43 × 553.43
  4. Step 4: Simplify right side
    568.98x = 473,421.38
  5. Step 5: Solve for x
    x = 473,421.38/568.98
  6. Step 6: Final answer
    x = 832.05

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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.