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Finding the Fourth Proportional to 565.73, 780.71 and 378.93

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Solution

The fourth proportional to 565.73, 780.71 and 378.93 is: 522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.73 : 780.71 = 378.93 : x
  2. Step 2: Convert to fraction form
    565.73/780.71 = 378.93/x
  3. Step 3: Cross multiply
    565.73x = 780.71 × 378.93
  4. Step 4: Simplify right side
    565.73x = 295,834.28
  5. Step 5: Solve for x
    x = 295,834.28/565.73
  6. Step 6: Final answer
    x = 522.92

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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.