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Finding the Fourth Proportional to 1,077.53, 1,486.95 and 605.51

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Solution

The fourth proportional to 1,077.53, 1,486.95 and 605.51 is: 835.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.53 : 1,486.95 = 605.51 : x
  2. Step 2: Convert to fraction form
    1,077.53/1,486.95 = 605.51/x
  3. Step 3: Cross multiply
    1,077.53x = 1,486.95 × 605.51
  4. Step 4: Simplify right side
    1,077.53x = 900,355.66
  5. Step 5: Solve for x
    x = 900,355.66/1,077.53
  6. Step 6: Final answer
    x = 835.58

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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.