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Finding the Fourth Proportional to 529.63, 792.72 and 479.11

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Solution

The fourth proportional to 529.63, 792.72 and 479.11 is: 717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.63 : 792.72 = 479.11 : x
  2. Step 2: Convert to fraction form
    529.63/792.72 = 479.11/x
  3. Step 3: Cross multiply
    529.63x = 792.72 × 479.11
  4. Step 4: Simplify right side
    529.63x = 379,793.72
  5. Step 5: Solve for x
    x = 379,793.72/529.63
  6. Step 6: Final answer
    x = 717.10

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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.