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Finding the Fourth Proportional to 524.59, 786.95 and 319.25

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Solution

The fourth proportional to 524.59, 786.95 and 319.25 is: 478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.59 : 786.95 = 319.25 : x
  2. Step 2: Convert to fraction form
    524.59/786.95 = 319.25/x
  3. Step 3: Cross multiply
    524.59x = 786.95 × 319.25
  4. Step 4: Simplify right side
    524.59x = 251,235.36
  5. Step 5: Solve for x
    x = 251,235.36/524.59
  6. Step 6: Final answer
    x = 478.92

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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.