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Finding the Fourth Proportional to 538.28, 741.96 and 464.28

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Solution

The fourth proportional to 538.28, 741.96 and 464.28 is: 639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.28 : 741.96 = 464.28 : x
  2. Step 2: Convert to fraction form
    538.28/741.96 = 464.28/x
  3. Step 3: Cross multiply
    538.28x = 741.96 × 464.28
  4. Step 4: Simplify right side
    538.28x = 344,477.19
  5. Step 5: Solve for x
    x = 344,477.19/538.28
  6. Step 6: Final answer
    x = 639.96

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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.