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Finding the Fourth Proportional to 387.07, 533.53 and 262.69

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Solution

The fourth proportional to 387.07, 533.53 and 262.69 is: 362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.07 : 533.53 = 262.69 : x
  2. Step 2: Convert to fraction form
    387.07/533.53 = 262.69/x
  3. Step 3: Cross multiply
    387.07x = 533.53 × 262.69
  4. Step 4: Simplify right side
    387.07x = 140,153.00
  5. Step 5: Solve for x
    x = 140,153.00/387.07
  6. Step 6: Final answer
    x = 362.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.