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Finding the Fourth Proportional to 431.84, 595.89 and 245.31

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Solution

The fourth proportional to 431.84, 595.89 and 245.31 is: 338.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.84 : 595.89 = 245.31 : x
  2. Step 2: Convert to fraction form
    431.84/595.89 = 245.31/x
  3. Step 3: Cross multiply
    431.84x = 595.89 × 245.31
  4. Step 4: Simplify right side
    431.84x = 146,177.78
  5. Step 5: Solve for x
    x = 146,177.78/431.84
  6. Step 6: Final answer
    x = 338.50

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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.