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Finding the Fourth Proportional to 626.83, 864.54 and 461.40

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Solution

The fourth proportional to 626.83, 864.54 and 461.40 is: 636.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.83 : 864.54 = 461.40 : x
  2. Step 2: Convert to fraction form
    626.83/864.54 = 461.40/x
  3. Step 3: Cross multiply
    626.83x = 864.54 × 461.40
  4. Step 4: Simplify right side
    626.83x = 398,898.76
  5. Step 5: Solve for x
    x = 398,898.76/626.83
  6. Step 6: Final answer
    x = 636.37

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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.