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Finding the Fourth Proportional to 626.58, 939.24 and 395.28

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Solution

The fourth proportional to 626.58, 939.24 and 395.28 is: 592.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.58 : 939.24 = 395.28 : x
  2. Step 2: Convert to fraction form
    626.58/939.24 = 395.28/x
  3. Step 3: Cross multiply
    626.58x = 939.24 × 395.28
  4. Step 4: Simplify right side
    626.58x = 371,262.79
  5. Step 5: Solve for x
    x = 371,262.79/626.58
  6. Step 6: Final answer
    x = 592.52

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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.