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Finding the Fourth Proportional to 565.06, 847.88 and 256.87

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Solution

The fourth proportional to 565.06, 847.88 and 256.87 is: 385.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.06 : 847.88 = 256.87 : x
  2. Step 2: Convert to fraction form
    565.06/847.88 = 256.87/x
  3. Step 3: Cross multiply
    565.06x = 847.88 × 256.87
  4. Step 4: Simplify right side
    565.06x = 217,795.22
  5. Step 5: Solve for x
    x = 217,795.22/565.06
  6. Step 6: Final answer
    x = 385.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.