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Finding the Fourth Proportional to 578.35, 865.47 and 501.58

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Solution

The fourth proportional to 578.35, 865.47 and 501.58 is: 750.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.35 : 865.47 = 501.58 : x
  2. Step 2: Convert to fraction form
    578.35/865.47 = 501.58/x
  3. Step 3: Cross multiply
    578.35x = 865.47 × 501.58
  4. Step 4: Simplify right side
    578.35x = 434,102.44
  5. Step 5: Solve for x
    x = 434,102.44/578.35
  6. Step 6: Final answer
    x = 750.59

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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.