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Finding the Fourth Proportional to 538.02, 742.77 and 456.02

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Solution

The fourth proportional to 538.02, 742.77 and 456.02 is: 629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.02 : 742.77 = 456.02 : x
  2. Step 2: Convert to fraction form
    538.02/742.77 = 456.02/x
  3. Step 3: Cross multiply
    538.02x = 742.77 × 456.02
  4. Step 4: Simplify right side
    538.02x = 338,714.26
  5. Step 5: Solve for x
    x = 338,714.26/538.02
  6. Step 6: Final answer
    x = 629.56

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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.