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Finding the Fourth Proportional to 263.47, 363.58 and 145.45

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Solution

The fourth proportional to 263.47, 363.58 and 145.45 is: 200.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.47 : 363.58 = 145.45 : x
  2. Step 2: Convert to fraction form
    263.47/363.58 = 145.45/x
  3. Step 3: Cross multiply
    263.47x = 363.58 × 145.45
  4. Step 4: Simplify right side
    263.47x = 52,882.09
  5. Step 5: Solve for x
    x = 52,882.09/263.47
  6. Step 6: Final answer
    x = 200.72

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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.