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Finding the Fourth Proportional to 345.16, 518.13 and 236.17

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Solution

The fourth proportional to 345.16, 518.13 and 236.17 is: 354.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.16 : 518.13 = 236.17 : x
  2. Step 2: Convert to fraction form
    345.16/518.13 = 236.17/x
  3. Step 3: Cross multiply
    345.16x = 518.13 × 236.17
  4. Step 4: Simplify right side
    345.16x = 122,366.76
  5. Step 5: Solve for x
    x = 122,366.76/345.16
  6. Step 6: Final answer
    x = 354.52

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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.