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Finding the Fourth Proportional to 529.99, 795.21 and 205.59

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Solution

The fourth proportional to 529.99, 795.21 and 205.59 is: 308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.99 : 795.21 = 205.59 : x
  2. Step 2: Convert to fraction form
    529.99/795.21 = 205.59/x
  3. Step 3: Cross multiply
    529.99x = 795.21 × 205.59
  4. Step 4: Simplify right side
    529.99x = 163,487.22
  5. Step 5: Solve for x
    x = 163,487.22/529.99
  6. Step 6: Final answer
    x = 308.47

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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.