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Finding the Fourth Proportional to 620.68, 929.76 and 483.16

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Solution

The fourth proportional to 620.68, 929.76 and 483.16 is: 723.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.68 : 929.76 = 483.16 : x
  2. Step 2: Convert to fraction form
    620.68/929.76 = 483.16/x
  3. Step 3: Cross multiply
    620.68x = 929.76 × 483.16
  4. Step 4: Simplify right side
    620.68x = 449,222.84
  5. Step 5: Solve for x
    x = 449,222.84/620.68
  6. Step 6: Final answer
    x = 723.76

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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.