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Finding the Fourth Proportional to 625.19, 862.76 and 359.64

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Solution

The fourth proportional to 625.19, 862.76 and 359.64 is: 496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.19 : 862.76 = 359.64 : x
  2. Step 2: Convert to fraction form
    625.19/862.76 = 359.64/x
  3. Step 3: Cross multiply
    625.19x = 862.76 × 359.64
  4. Step 4: Simplify right side
    625.19x = 310,281.21
  5. Step 5: Solve for x
    x = 310,281.21/625.19
  6. Step 6: Final answer
    x = 496.30

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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.