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Finding the Fourth Proportional to 617.70, 922.04 and 574.98

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Solution

The fourth proportional to 617.70, 922.04 and 574.98 is: 858.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.70 : 922.04 = 574.98 : x
  2. Step 2: Convert to fraction form
    617.70/922.04 = 574.98/x
  3. Step 3: Cross multiply
    617.70x = 922.04 × 574.98
  4. Step 4: Simplify right side
    617.70x = 530,151.68
  5. Step 5: Solve for x
    x = 530,151.68/617.70
  6. Step 6: Final answer
    x = 858.27

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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.