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Finding the Fourth Proportional to 431.21, 595.53 and 372.48

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Solution

The fourth proportional to 431.21, 595.53 and 372.48 is: 514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.21 : 595.53 = 372.48 : x
  2. Step 2: Convert to fraction form
    431.21/595.53 = 372.48/x
  3. Step 3: Cross multiply
    431.21x = 595.53 × 372.48
  4. Step 4: Simplify right side
    431.21x = 221,823.01
  5. Step 5: Solve for x
    x = 221,823.01/431.21
  6. Step 6: Final answer
    x = 514.43

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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.