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Finding the Fourth Proportional to 617.99, 927.14 and 435.74

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Solution

The fourth proportional to 617.99, 927.14 and 435.74 is: 653.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.99 : 927.14 = 435.74 : x
  2. Step 2: Convert to fraction form
    617.99/927.14 = 435.74/x
  3. Step 3: Cross multiply
    617.99x = 927.14 × 435.74
  4. Step 4: Simplify right side
    617.99x = 403,991.98
  5. Step 5: Solve for x
    x = 403,991.98/617.99
  6. Step 6: Final answer
    x = 653.72

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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.