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Finding the Fourth Proportional to 435.66, 601.44 and 288.64

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Solution

The fourth proportional to 435.66, 601.44 and 288.64 is: 398.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.66 : 601.44 = 288.64 : x
  2. Step 2: Convert to fraction form
    435.66/601.44 = 288.64/x
  3. Step 3: Cross multiply
    435.66x = 601.44 × 288.64
  4. Step 4: Simplify right side
    435.66x = 173,599.64
  5. Step 5: Solve for x
    x = 173,599.64/435.66
  6. Step 6: Final answer
    x = 398.48

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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.