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Finding the Fourth Proportional to 500.46, 690.88 and 382.93

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Solution

The fourth proportional to 500.46, 690.88 and 382.93 is: 528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.46 : 690.88 = 382.93 : x
  2. Step 2: Convert to fraction form
    500.46/690.88 = 382.93/x
  3. Step 3: Cross multiply
    500.46x = 690.88 × 382.93
  4. Step 4: Simplify right side
    500.46x = 264,556.71
  5. Step 5: Solve for x
    x = 264,556.71/500.46
  6. Step 6: Final answer
    x = 528.63

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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.