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Finding the Fourth Proportional to 708.01, 975.45 and 620.53

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Solution

The fourth proportional to 708.01, 975.45 and 620.53 is: 854.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.01 : 975.45 = 620.53 : x
  2. Step 2: Convert to fraction form
    708.01/975.45 = 620.53/x
  3. Step 3: Cross multiply
    708.01x = 975.45 × 620.53
  4. Step 4: Simplify right side
    708.01x = 605,295.99
  5. Step 5: Solve for x
    x = 605,295.99/708.01
  6. Step 6: Final answer
    x = 854.93

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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.