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Finding the Fourth Proportional to 457.52, 682.93 and 429.08

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Solution

The fourth proportional to 457.52, 682.93 and 429.08 is: 640.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.52 : 682.93 = 429.08 : x
  2. Step 2: Convert to fraction form
    457.52/682.93 = 429.08/x
  3. Step 3: Cross multiply
    457.52x = 682.93 × 429.08
  4. Step 4: Simplify right side
    457.52x = 293,031.60
  5. Step 5: Solve for x
    x = 293,031.60/457.52
  6. Step 6: Final answer
    x = 640.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.