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Finding the Fourth Proportional to 565.19, 779.90 and 332.31

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Solution

The fourth proportional to 565.19, 779.90 and 332.31 is: 458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.19 : 779.90 = 332.31 : x
  2. Step 2: Convert to fraction form
    565.19/779.90 = 332.31/x
  3. Step 3: Cross multiply
    565.19x = 779.90 × 332.31
  4. Step 4: Simplify right side
    565.19x = 259,166.91
  5. Step 5: Solve for x
    x = 259,166.91/565.19
  6. Step 6: Final answer
    x = 458.55

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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.