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Finding the Fourth Proportional to 690.00, 952.13 and 395.26

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Solution

The fourth proportional to 690.00, 952.13 and 395.26 is: 545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.00 : 952.13 = 395.26 : x
  2. Step 2: Convert to fraction form
    690.00/952.13 = 395.26/x
  3. Step 3: Cross multiply
    690.00x = 952.13 × 395.26
  4. Step 4: Simplify right side
    690.00x = 376,337.51
  5. Step 5: Solve for x
    x = 376,337.51/690.00
  6. Step 6: Final answer
    x = 545.42

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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.