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Finding the Fourth Proportional to 690.38, 952.64 and 410.62

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Solution

The fourth proportional to 690.38, 952.64 and 410.62 is: 566.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.38 : 952.64 = 410.62 : x
  2. Step 2: Convert to fraction form
    690.38/952.64 = 410.62/x
  3. Step 3: Cross multiply
    690.38x = 952.64 × 410.62
  4. Step 4: Simplify right side
    690.38x = 391,173.04
  5. Step 5: Solve for x
    x = 391,173.04/690.38
  6. Step 6: Final answer
    x = 566.61

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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.