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Finding the Fourth Proportional to 565.94, 780.90 and 356.24

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Solution

The fourth proportional to 565.94, 780.90 and 356.24 is: 491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.94 : 780.90 = 356.24 : x
  2. Step 2: Convert to fraction form
    565.94/780.90 = 356.24/x
  3. Step 3: Cross multiply
    565.94x = 780.90 × 356.24
  4. Step 4: Simplify right side
    565.94x = 278,187.82
  5. Step 5: Solve for x
    x = 278,187.82/565.94
  6. Step 6: Final answer
    x = 491.55

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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.