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Finding the Fourth Proportional to 571.38, 857.68 and 558.98

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Solution

The fourth proportional to 571.38, 857.68 and 558.98 is: 839.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.38 : 857.68 = 558.98 : x
  2. Step 2: Convert to fraction form
    571.38/857.68 = 558.98/x
  3. Step 3: Cross multiply
    571.38x = 857.68 × 558.98
  4. Step 4: Simplify right side
    571.38x = 479,423.50
  5. Step 5: Solve for x
    x = 479,423.50/571.38
  6. Step 6: Final answer
    x = 839.07

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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.