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Finding the Fourth Proportional to 462.02, 636.80 and 392.27

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Solution

The fourth proportional to 462.02, 636.80 and 392.27 is: 540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.02 : 636.80 = 392.27 : x
  2. Step 2: Convert to fraction form
    462.02/636.80 = 392.27/x
  3. Step 3: Cross multiply
    462.02x = 636.80 × 392.27
  4. Step 4: Simplify right side
    462.02x = 249,792.39
  5. Step 5: Solve for x
    x = 249,792.39/462.02
  6. Step 6: Final answer
    x = 540.66

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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.