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Finding the Fourth Proportional to 625.89, 863.79 and 346.18

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Solution

The fourth proportional to 625.89, 863.79 and 346.18 is: 477.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.89 : 863.79 = 346.18 : x
  2. Step 2: Convert to fraction form
    625.89/863.79 = 346.18/x
  3. Step 3: Cross multiply
    625.89x = 863.79 × 346.18
  4. Step 4: Simplify right side
    625.89x = 299,026.82
  5. Step 5: Solve for x
    x = 299,026.82/625.89
  6. Step 6: Final answer
    x = 477.76

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1.5x scale

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.