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Finding the Fourth Proportional to 534.45, 801.58 and 303.78

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Solution

The fourth proportional to 534.45, 801.58 and 303.78 is: 455.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.45 : 801.58 = 303.78 : x
  2. Step 2: Convert to fraction form
    534.45/801.58 = 303.78/x
  3. Step 3: Cross multiply
    534.45x = 801.58 × 303.78
  4. Step 4: Simplify right side
    534.45x = 243,503.97
  5. Step 5: Solve for x
    x = 243,503.97/534.45
  6. Step 6: Final answer
    x = 455.62

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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.