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Finding the Fourth Proportional to 495.37, 684.48 and 397.90

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Solution

The fourth proportional to 495.37, 684.48 and 397.90 is: 549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.37 : 684.48 = 397.90 : x
  2. Step 2: Convert to fraction form
    495.37/684.48 = 397.90/x
  3. Step 3: Cross multiply
    495.37x = 684.48 × 397.90
  4. Step 4: Simplify right side
    495.37x = 272,354.59
  5. Step 5: Solve for x
    x = 272,354.59/495.37
  6. Step 6: Final answer
    x = 549.80

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.