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Finding the Fourth Proportional to 565.66, 780.26 and 344.64

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Solution

The fourth proportional to 565.66, 780.26 and 344.64 is: 475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.66 : 780.26 = 344.64 : x
  2. Step 2: Convert to fraction form
    565.66/780.26 = 344.64/x
  3. Step 3: Cross multiply
    565.66x = 780.26 × 344.64
  4. Step 4: Simplify right side
    565.66x = 268,908.81
  5. Step 5: Solve for x
    x = 268,908.81/565.66
  6. Step 6: Final answer
    x = 475.39

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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.