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Finding the Fourth Proportional to 571.12, 855.46 and 529.81

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Solution

The fourth proportional to 571.12, 855.46 and 529.81 is: 793.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.12 : 855.46 = 529.81 : x
  2. Step 2: Convert to fraction form
    571.12/855.46 = 529.81/x
  3. Step 3: Cross multiply
    571.12x = 855.46 × 529.81
  4. Step 4: Simplify right side
    571.12x = 453,229.79
  5. Step 5: Solve for x
    x = 453,229.79/571.12
  6. Step 6: Final answer
    x = 793.58

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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.