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Finding the Fourth Proportional to 536.51, 803.51 and 518.03

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Solution

The fourth proportional to 536.51, 803.51 and 518.03 is: 775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.51 : 803.51 = 518.03 : x
  2. Step 2: Convert to fraction form
    536.51/803.51 = 518.03/x
  3. Step 3: Cross multiply
    536.51x = 803.51 × 518.03
  4. Step 4: Simplify right side
    536.51x = 416,242.29
  5. Step 5: Solve for x
    x = 416,242.29/536.51
  6. Step 6: Final answer
    x = 775.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.