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Finding the Fourth Proportional to 625.70, 934.89 and 528.50

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Solution

The fourth proportional to 625.70, 934.89 and 528.50 is: 789.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.70 : 934.89 = 528.50 : x
  2. Step 2: Convert to fraction form
    625.70/934.89 = 528.50/x
  3. Step 3: Cross multiply
    625.70x = 934.89 × 528.50
  4. Step 4: Simplify right side
    625.70x = 494,089.37
  5. Step 5: Solve for x
    x = 494,089.37/625.70
  6. Step 6: Final answer
    x = 789.66

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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.