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Finding the Fourth Proportional to 463.16, 638.84 and 297.11

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Solution

The fourth proportional to 463.16, 638.84 and 297.11 is: 409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.16 : 638.84 = 297.11 : x
  2. Step 2: Convert to fraction form
    463.16/638.84 = 297.11/x
  3. Step 3: Cross multiply
    463.16x = 638.84 × 297.11
  4. Step 4: Simplify right side
    463.16x = 189,801.07
  5. Step 5: Solve for x
    x = 189,801.07/463.16
  6. Step 6: Final answer
    x = 409.80

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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.