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Finding the Fourth Proportional to 425.39, 634.74 and 357.04

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Solution

The fourth proportional to 425.39, 634.74 and 357.04 is: 532.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.39 : 634.74 = 357.04 : x
  2. Step 2: Convert to fraction form
    425.39/634.74 = 357.04/x
  3. Step 3: Cross multiply
    425.39x = 634.74 × 357.04
  4. Step 4: Simplify right side
    425.39x = 226,627.02
  5. Step 5: Solve for x
    x = 226,627.02/425.39
  6. Step 6: Final answer
    x = 532.76

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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.