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Finding the Fourth Proportional to 708.88, 975.83 and 615.07

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Solution

The fourth proportional to 708.88, 975.83 and 615.07 is: 846.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.88 : 975.83 = 615.07 : x
  2. Step 2: Convert to fraction form
    708.88/975.83 = 615.07/x
  3. Step 3: Cross multiply
    708.88x = 975.83 × 615.07
  4. Step 4: Simplify right side
    708.88x = 600,201.90
  5. Step 5: Solve for x
    x = 600,201.90/708.88
  6. Step 6: Final answer
    x = 846.69

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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.