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Finding the Fourth Proportional to 345.89, 518.55 and 224.87

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Solution

The fourth proportional to 345.89, 518.55 and 224.87 is: 337.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.89 : 518.55 = 224.87 : x
  2. Step 2: Convert to fraction form
    345.89/518.55 = 224.87/x
  3. Step 3: Cross multiply
    345.89x = 518.55 × 224.87
  4. Step 4: Simplify right side
    345.89x = 116,603.75
  5. Step 5: Solve for x
    x = 116,603.75/345.89
  6. Step 6: Final answer
    x = 337.12

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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.