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Finding the Fourth Proportional to 431.48, 595.42 and 245.00

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Solution

The fourth proportional to 431.48, 595.42 and 245.00 is: 338.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.48 : 595.42 = 245.00 : x
  2. Step 2: Convert to fraction form
    431.48/595.42 = 245.00/x
  3. Step 3: Cross multiply
    431.48x = 595.42 × 245.00
  4. Step 4: Simplify right side
    431.48x = 145,878.78
  5. Step 5: Solve for x
    x = 145,878.78/431.48
  6. Step 6: Final answer
    x = 338.09

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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.