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Finding the Fourth Proportional to 708.19, 976.62 and 459.58

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Solution

The fourth proportional to 708.19, 976.62 and 459.58 is: 633.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.19 : 976.62 = 459.58 : x
  2. Step 2: Convert to fraction form
    708.19/976.62 = 459.58/x
  3. Step 3: Cross multiply
    708.19x = 976.62 × 459.58
  4. Step 4: Simplify right side
    708.19x = 448,835.02
  5. Step 5: Solve for x
    x = 448,835.02/708.19
  6. Step 6: Final answer
    x = 633.78

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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.