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Finding the Fourth Proportional to 425.20, 633.93 and 414.36

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Solution

The fourth proportional to 425.20, 633.93 and 414.36 is: 617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.20 : 633.93 = 414.36 : x
  2. Step 2: Convert to fraction form
    425.20/633.93 = 414.36/x
  3. Step 3: Cross multiply
    425.20x = 633.93 × 414.36
  4. Step 4: Simplify right side
    425.20x = 262,675.23
  5. Step 5: Solve for x
    x = 262,675.23/425.20
  6. Step 6: Final answer
    x = 617.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.