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Finding the Fourth Proportional to 1,066.51, 1,599.40 and 518.34

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Solution

The fourth proportional to 1,066.51, 1,599.40 and 518.34 is: 777.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066.51 : 1,599.40 = 518.34 : x
  2. Step 2: Convert to fraction form
    1,066.51/1,599.40 = 518.34/x
  3. Step 3: Cross multiply
    1,066.51x = 1,599.40 × 518.34
  4. Step 4: Simplify right side
    1,066.51x = 829,033.00
  5. Step 5: Solve for x
    x = 829,033.00/1,066.51
  6. Step 6: Final answer
    x = 777.33

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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.