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Finding the Fourth Proportional to 528.76, 792.14 and 488.98

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Solution

The fourth proportional to 528.76, 792.14 and 488.98 is: 732.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.76 : 792.14 = 488.98 : x
  2. Step 2: Convert to fraction form
    528.76/792.14 = 488.98/x
  3. Step 3: Cross multiply
    528.76x = 792.14 × 488.98
  4. Step 4: Simplify right side
    528.76x = 387,340.62
  5. Step 5: Solve for x
    x = 387,340.62/528.76
  6. Step 6: Final answer
    x = 732.55

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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.