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Finding the Fourth Proportional to 385.83, 532.26 and 245.88

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Solution

The fourth proportional to 385.83, 532.26 and 245.88 is: 339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.83 : 532.26 = 245.88 : x
  2. Step 2: Convert to fraction form
    385.83/532.26 = 245.88/x
  3. Step 3: Cross multiply
    385.83x = 532.26 × 245.88
  4. Step 4: Simplify right side
    385.83x = 130,872.09
  5. Step 5: Solve for x
    x = 130,872.09/385.83
  6. Step 6: Final answer
    x = 339.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.