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Finding the Fourth Proportional to 356.88, 535.32 and 202.80

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Solution

The fourth proportional to 356.88, 535.32 and 202.80 is: 304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.88 : 535.32 = 202.80 : x
  2. Step 2: Convert to fraction form
    356.88/535.32 = 202.80/x
  3. Step 3: Cross multiply
    356.88x = 535.32 × 202.80
  4. Step 4: Simplify right side
    356.88x = 108,562.90
  5. Step 5: Solve for x
    x = 108,562.90/356.88
  6. Step 6: Final answer
    x = 304.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.