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Finding the Fourth Proportional to 288.32, 398.64 and 237.44

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Solution

The fourth proportional to 288.32, 398.64 and 237.44 is: 328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.32 : 398.64 = 237.44 : x
  2. Step 2: Convert to fraction form
    288.32/398.64 = 237.44/x
  3. Step 3: Cross multiply
    288.32x = 398.64 × 237.44
  4. Step 4: Simplify right side
    288.32x = 94,653.08
  5. Step 5: Solve for x
    x = 94,653.08/288.32
  6. Step 6: Final answer
    x = 328.29

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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.