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Finding the Fourth Proportional to 431.81, 595.91 and 245.30

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Solution

The fourth proportional to 431.81, 595.91 and 245.30 is: 338.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.81 : 595.91 = 245.30 : x
  2. Step 2: Convert to fraction form
    431.81/595.91 = 245.30/x
  3. Step 3: Cross multiply
    431.81x = 595.91 × 245.30
  4. Step 4: Simplify right side
    431.81x = 146,174.36
  5. Step 5: Solve for x
    x = 146,174.36/431.81
  6. Step 6: Final answer
    x = 338.52

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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.