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Finding the Fourth Proportional to 347.79, 520.57 and 224.47

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Solution

The fourth proportional to 347.79, 520.57 and 224.47 is: 335.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.79 : 520.57 = 224.47 : x
  2. Step 2: Convert to fraction form
    347.79/520.57 = 224.47/x
  3. Step 3: Cross multiply
    347.79x = 520.57 × 224.47
  4. Step 4: Simplify right side
    347.79x = 116,852.35
  5. Step 5: Solve for x
    x = 116,852.35/347.79
  6. Step 6: Final answer
    x = 335.99

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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.