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Finding the Fourth Proportional to 524.27, 786.51 and 281.07

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Solution

The fourth proportional to 524.27, 786.51 and 281.07 is: 421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.27 : 786.51 = 281.07 : x
  2. Step 2: Convert to fraction form
    524.27/786.51 = 281.07/x
  3. Step 3: Cross multiply
    524.27x = 786.51 × 281.07
  4. Step 4: Simplify right side
    524.27x = 221,064.37
  5. Step 5: Solve for x
    x = 221,064.37/524.27
  6. Step 6: Final answer
    x = 421.66

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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.