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Finding the Fourth Proportional to 289.04, 398.44 and 237.20

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Solution

The fourth proportional to 289.04, 398.44 and 237.20 is: 326.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.04 : 398.44 = 237.20 : x
  2. Step 2: Convert to fraction form
    289.04/398.44 = 237.20/x
  3. Step 3: Cross multiply
    289.04x = 398.44 × 237.20
  4. Step 4: Simplify right side
    289.04x = 94,509.97
  5. Step 5: Solve for x
    x = 94,509.97/289.04
  6. Step 6: Final answer
    x = 326.98

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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.