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Finding the Fourth Proportional to 345.00, 515.52 and 262.28

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Solution

The fourth proportional to 345.00, 515.52 and 262.28 is: 391.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.00 : 515.52 = 262.28 : x
  2. Step 2: Convert to fraction form
    345.00/515.52 = 262.28/x
  3. Step 3: Cross multiply
    345.00x = 515.52 × 262.28
  4. Step 4: Simplify right side
    345.00x = 135,208.34
  5. Step 5: Solve for x
    x = 135,208.34/345.00
  6. Step 6: Final answer
    x = 391.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.