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Finding the Fourth Proportional to 431.65, 595.64 and 245.12

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Solution

The fourth proportional to 431.65, 595.64 and 245.12 is: 338.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.65 : 595.64 = 245.12 : x
  2. Step 2: Convert to fraction form
    431.65/595.64 = 245.12/x
  3. Step 3: Cross multiply
    431.65x = 595.64 × 245.12
  4. Step 4: Simplify right side
    431.65x = 146,003.28
  5. Step 5: Solve for x
    x = 146,003.28/431.65
  6. Step 6: Final answer
    x = 338.24

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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.