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Finding the Fourth Proportional to 578.91, 867.15 and 529.11

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Solution

The fourth proportional to 578.91, 867.15 and 529.11 is: 792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.91 : 867.15 = 529.11 : x
  2. Step 2: Convert to fraction form
    578.91/867.15 = 529.11/x
  3. Step 3: Cross multiply
    578.91x = 867.15 × 529.11
  4. Step 4: Simplify right side
    578.91x = 458,817.74
  5. Step 5: Solve for x
    x = 458,817.74/578.91
  6. Step 6: Final answer
    x = 792.55

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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.