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Finding the Fourth Proportional to 457.63, 631.49 and 261.14

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Solution

The fourth proportional to 457.63, 631.49 and 261.14 is: 360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.63 : 631.49 = 261.14 : x
  2. Step 2: Convert to fraction form
    457.63/631.49 = 261.14/x
  3. Step 3: Cross multiply
    457.63x = 631.49 × 261.14
  4. Step 4: Simplify right side
    457.63x = 164,907.30
  5. Step 5: Solve for x
    x = 164,907.30/457.63
  6. Step 6: Final answer
    x = 360.35

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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.