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Finding the Fourth Proportional to 317.66, 476.76 and 236.66

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Solution

The fourth proportional to 317.66, 476.76 and 236.66 is: 355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.66 : 476.76 = 236.66 : x
  2. Step 2: Convert to fraction form
    317.66/476.76 = 236.66/x
  3. Step 3: Cross multiply
    317.66x = 476.76 × 236.66
  4. Step 4: Simplify right side
    317.66x = 112,830.02
  5. Step 5: Solve for x
    x = 112,830.02/317.66
  6. Step 6: Final answer
    x = 355.19

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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.