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Finding the Fourth Proportional to 578.41, 860.18 and 560.18

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Solution

The fourth proportional to 578.41, 860.18 and 560.18 is: 833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.41 : 860.18 = 560.18 : x
  2. Step 2: Convert to fraction form
    578.41/860.18 = 560.18/x
  3. Step 3: Cross multiply
    578.41x = 860.18 × 560.18
  4. Step 4: Simplify right side
    578.41x = 481,855.63
  5. Step 5: Solve for x
    x = 481,855.63/578.41
  6. Step 6: Final answer
    x = 833.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.