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Finding the Fourth Proportional to 314.38, 433.91 and 183.46

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Solution

The fourth proportional to 314.38, 433.91 and 183.46 is: 253.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.38 : 433.91 = 183.46 : x
  2. Step 2: Convert to fraction form
    314.38/433.91 = 183.46/x
  3. Step 3: Cross multiply
    314.38x = 433.91 × 183.46
  4. Step 4: Simplify right side
    314.38x = 79,605.13
  5. Step 5: Solve for x
    x = 79,605.13/314.38
  6. Step 6: Final answer
    x = 253.21

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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.