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Finding the Fourth Proportional to 538.08, 741.78 and 380.58

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Solution

The fourth proportional to 538.08, 741.78 and 380.58 is: 524.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.08 : 741.78 = 380.58 : x
  2. Step 2: Convert to fraction form
    538.08/741.78 = 380.58/x
  3. Step 3: Cross multiply
    538.08x = 741.78 × 380.58
  4. Step 4: Simplify right side
    538.08x = 282,306.63
  5. Step 5: Solve for x
    x = 282,306.63/538.08
  6. Step 6: Final answer
    x = 524.66

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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.