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Finding the Fourth Proportional to 617.79, 925.67 and 309.33

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Solution

The fourth proportional to 617.79, 925.67 and 309.33 is: 463.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.79 : 925.67 = 309.33 : x
  2. Step 2: Convert to fraction form
    617.79/925.67 = 309.33/x
  3. Step 3: Cross multiply
    617.79x = 925.67 × 309.33
  4. Step 4: Simplify right side
    617.79x = 286,335.95
  5. Step 5: Solve for x
    x = 286,335.95/617.79
  6. Step 6: Final answer
    x = 463.48

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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.