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Finding the Fourth Proportional to 762.00, 1,050.79 and 621.67

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Solution

The fourth proportional to 762.00, 1,050.79 and 621.67 is: 857.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.00 : 1,050.79 = 621.67 : x
  2. Step 2: Convert to fraction form
    762.00/1,050.79 = 621.67/x
  3. Step 3: Cross multiply
    762.00x = 1,050.79 × 621.67
  4. Step 4: Simplify right side
    762.00x = 653,237.81
  5. Step 5: Solve for x
    x = 653,237.81/762.00
  6. Step 6: Final answer
    x = 857.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.