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Finding the Fourth Proportional to 1,028.18, 1,419 and 586.16

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Solution

The fourth proportional to 1,028.18, 1,419 and 586.16 is: 808.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.18 : 1,419 = 586.16 : x
  2. Step 2: Convert to fraction form
    1,028.18/1,419 = 586.16/x
  3. Step 3: Cross multiply
    1,028.18x = 1,419 × 586.16
  4. Step 4: Simplify right side
    1,028.18x = 831,761.04
  5. Step 5: Solve for x
    x = 831,761.04/1,028.18
  6. Step 6: Final answer
    x = 808.96

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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.