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Finding the Fourth Proportional to 626.51, 938.57 and 351.77

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Solution

The fourth proportional to 626.51, 938.57 and 351.77 is: 526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.51 : 938.57 = 351.77 : x
  2. Step 2: Convert to fraction form
    626.51/938.57 = 351.77/x
  3. Step 3: Cross multiply
    626.51x = 938.57 × 351.77
  4. Step 4: Simplify right side
    626.51x = 330,160.77
  5. Step 5: Solve for x
    x = 330,160.77/626.51
  6. Step 6: Final answer
    x = 526.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.