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Finding the Fourth Proportional to 476.24, 657.08 and 279.71

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Solution

The fourth proportional to 476.24, 657.08 and 279.71 is: 385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.24 : 657.08 = 279.71 : x
  2. Step 2: Convert to fraction form
    476.24/657.08 = 279.71/x
  3. Step 3: Cross multiply
    476.24x = 657.08 × 279.71
  4. Step 4: Simplify right side
    476.24x = 183,791.72
  5. Step 5: Solve for x
    x = 183,791.72/476.24
  6. Step 6: Final answer
    x = 385.93

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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.