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Finding the Fourth Proportional to 690.11, 952.17 and 410.40

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Solution

The fourth proportional to 690.11, 952.17 and 410.40 is: 566.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.11 : 952.17 = 410.40 : x
  2. Step 2: Convert to fraction form
    690.11/952.17 = 410.40/x
  3. Step 3: Cross multiply
    690.11x = 952.17 × 410.40
  4. Step 4: Simplify right side
    690.11x = 390,770.57
  5. Step 5: Solve for x
    x = 390,770.57/690.11
  6. Step 6: Final answer
    x = 566.25

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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.