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Finding the Fourth Proportional to 402.28, 555.53 and 332.56

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Solution

The fourth proportional to 402.28, 555.53 and 332.56 is: 459.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.28 : 555.53 = 332.56 : x
  2. Step 2: Convert to fraction form
    402.28/555.53 = 332.56/x
  3. Step 3: Cross multiply
    402.28x = 555.53 × 332.56
  4. Step 4: Simplify right side
    402.28x = 184,747.06
  5. Step 5: Solve for x
    x = 184,747.06/402.28
  6. Step 6: Final answer
    x = 459.25

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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.