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Finding the Fourth Proportional to 317.20, 437.67 and 192.93

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Solution

The fourth proportional to 317.20, 437.67 and 192.93 is: 266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.20 : 437.67 = 192.93 : x
  2. Step 2: Convert to fraction form
    317.20/437.67 = 192.93/x
  3. Step 3: Cross multiply
    317.20x = 437.67 × 192.93
  4. Step 4: Simplify right side
    317.20x = 84,439.67
  5. Step 5: Solve for x
    x = 84,439.67/317.20
  6. Step 6: Final answer
    x = 266.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.