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Finding the Fourth Proportional to 529.14, 792.36 and 478.11

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Solution

The fourth proportional to 529.14, 792.36 and 478.11 is: 715.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.14 : 792.36 = 478.11 : x
  2. Step 2: Convert to fraction form
    529.14/792.36 = 478.11/x
  3. Step 3: Cross multiply
    529.14x = 792.36 × 478.11
  4. Step 4: Simplify right side
    529.14x = 378,835.24
  5. Step 5: Solve for x
    x = 378,835.24/529.14
  6. Step 6: Final answer
    x = 715.95

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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.