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Finding the Fourth Proportional to 626.81, 933.12 and 619.79

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Solution

The fourth proportional to 626.81, 933.12 and 619.79 is: 922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.81 : 933.12 = 619.79 : x
  2. Step 2: Convert to fraction form
    626.81/933.12 = 619.79/x
  3. Step 3: Cross multiply
    626.81x = 933.12 × 619.79
  4. Step 4: Simplify right side
    626.81x = 578,333.78
  5. Step 5: Solve for x
    x = 578,333.78/626.81
  6. Step 6: Final answer
    x = 922.67

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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.