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Finding the Fourth Proportional to 466.04, 642.74 and 288.92

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Solution

The fourth proportional to 466.04, 642.74 and 288.92 is: 398.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.04 : 642.74 = 288.92 : x
  2. Step 2: Convert to fraction form
    466.04/642.74 = 288.92/x
  3. Step 3: Cross multiply
    466.04x = 642.74 × 288.92
  4. Step 4: Simplify right side
    466.04x = 185,700.44
  5. Step 5: Solve for x
    x = 185,700.44/466.04
  6. Step 6: Final answer
    x = 398.46

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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.