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Finding the Fourth Proportional to 565.36, 780.28 and 332.56

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Solution

The fourth proportional to 565.36, 780.28 and 332.56 is: 458.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.36 : 780.28 = 332.56 : x
  2. Step 2: Convert to fraction form
    565.36/780.28 = 332.56/x
  3. Step 3: Cross multiply
    565.36x = 780.28 × 332.56
  4. Step 4: Simplify right side
    565.36x = 259,489.92
  5. Step 5: Solve for x
    x = 259,489.92/565.36
  6. Step 6: Final answer
    x = 458.98

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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.