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Finding the Fourth Proportional to 457.20, 631.48 and 364.26

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Solution

The fourth proportional to 457.20, 631.48 and 364.26 is: 503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.20 : 631.48 = 364.26 : x
  2. Step 2: Convert to fraction form
    457.20/631.48 = 364.26/x
  3. Step 3: Cross multiply
    457.20x = 631.48 × 364.26
  4. Step 4: Simplify right side
    457.20x = 230,022.90
  5. Step 5: Solve for x
    x = 230,022.90/457.20
  6. Step 6: Final answer
    x = 503.11

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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.