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Finding the Fourth Proportional to 495.30, 742.80 and 364.88

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Solution

The fourth proportional to 495.30, 742.80 and 364.88 is: 547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.30 : 742.80 = 364.88 : x
  2. Step 2: Convert to fraction form
    495.30/742.80 = 364.88/x
  3. Step 3: Cross multiply
    495.30x = 742.80 × 364.88
  4. Step 4: Simplify right side
    495.30x = 271,032.86
  5. Step 5: Solve for x
    x = 271,032.86/495.30
  6. Step 6: Final answer
    x = 547.21

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