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Finding the Fourth Proportional to 626.50, 939.85 and 510.67

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Solution

The fourth proportional to 626.50, 939.85 and 510.67 is: 766.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.50 : 939.85 = 510.67 : x
  2. Step 2: Convert to fraction form
    626.50/939.85 = 510.67/x
  3. Step 3: Cross multiply
    626.50x = 939.85 × 510.67
  4. Step 4: Simplify right side
    626.50x = 479,953.20
  5. Step 5: Solve for x
    x = 479,953.20/626.50
  6. Step 6: Final answer
    x = 766.09

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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.