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Finding the Fourth Proportional to 538.15, 741.81 and 372.08

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Solution

The fourth proportional to 538.15, 741.81 and 372.08 is: 512.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.15 : 741.81 = 372.08 : x
  2. Step 2: Convert to fraction form
    538.15/741.81 = 372.08/x
  3. Step 3: Cross multiply
    538.15x = 741.81 × 372.08
  4. Step 4: Simplify right side
    538.15x = 276,008.96
  5. Step 5: Solve for x
    x = 276,008.96/538.15
  6. Step 6: Final answer
    x = 512.89

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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.