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Finding the Fourth Proportional to 312.32, 468.29 and 158.17

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Solution

The fourth proportional to 312.32, 468.29 and 158.17 is: 237.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.32 : 468.29 = 158.17 : x
  2. Step 2: Convert to fraction form
    312.32/468.29 = 158.17/x
  3. Step 3: Cross multiply
    312.32x = 468.29 × 158.17
  4. Step 4: Simplify right side
    312.32x = 74,069.43
  5. Step 5: Solve for x
    x = 74,069.43/312.32
  6. Step 6: Final answer
    x = 237.16

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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.