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Finding the Fourth Proportional to 317.64, 437.94 and 292.92

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Solution

The fourth proportional to 317.64, 437.94 and 292.92 is: 403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.64 : 437.94 = 292.92 : x
  2. Step 2: Convert to fraction form
    317.64/437.94 = 292.92/x
  3. Step 3: Cross multiply
    317.64x = 437.94 × 292.92
  4. Step 4: Simplify right side
    317.64x = 128,281.38
  5. Step 5: Solve for x
    x = 128,281.38/317.64
  6. Step 6: Final answer
    x = 403.86

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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.