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Finding the Fourth Proportional to 538.28, 737.99 and 528.56

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Solution

The fourth proportional to 538.28, 737.99 and 528.56 is: 724.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.28 : 737.99 = 528.56 : x
  2. Step 2: Convert to fraction form
    538.28/737.99 = 528.56/x
  3. Step 3: Cross multiply
    538.28x = 737.99 × 528.56
  4. Step 4: Simplify right side
    538.28x = 390,071.99
  5. Step 5: Solve for x
    x = 390,071.99/538.28
  6. Step 6: Final answer
    x = 724.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.