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Finding the Fourth Proportional to 524.91, 786.72 and 519.42

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Solution

The fourth proportional to 524.91, 786.72 and 519.42 is: 778.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.91 : 786.72 = 519.42 : x
  2. Step 2: Convert to fraction form
    524.91/786.72 = 519.42/x
  3. Step 3: Cross multiply
    524.91x = 786.72 × 519.42
  4. Step 4: Simplify right side
    524.91x = 408,637.47
  5. Step 5: Solve for x
    x = 408,637.47/524.91
  6. Step 6: Final answer
    x = 778.49

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1.5x scale

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.