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Finding the Fourth Proportional to 525.54, 786.69 and 342.54

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Solution

The fourth proportional to 525.54, 786.69 and 342.54 is: 512.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.54 : 786.69 = 342.54 : x
  2. Step 2: Convert to fraction form
    525.54/786.69 = 342.54/x
  3. Step 3: Cross multiply
    525.54x = 786.69 × 342.54
  4. Step 4: Simplify right side
    525.54x = 269,472.79
  5. Step 5: Solve for x
    x = 269,472.79/525.54
  6. Step 6: Final answer
    x = 512.75

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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.