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Finding the Fourth Proportional to 626.23, 864.50 and 416.75

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Solution

The fourth proportional to 626.23, 864.50 and 416.75 is: 575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.23 : 864.50 = 416.75 : x
  2. Step 2: Convert to fraction form
    626.23/864.50 = 416.75/x
  3. Step 3: Cross multiply
    626.23x = 864.50 × 416.75
  4. Step 4: Simplify right side
    626.23x = 360,281.49
  5. Step 5: Solve for x
    x = 360,281.49/626.23
  6. Step 6: Final answer
    x = 575.32

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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.