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Finding the Fourth Proportional to 458.35, 632.28 and 347.64

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Solution

The fourth proportional to 458.35, 632.28 and 347.64 is: 479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.35 : 632.28 = 347.64 : x
  2. Step 2: Convert to fraction form
    458.35/632.28 = 347.64/x
  3. Step 3: Cross multiply
    458.35x = 632.28 × 347.64
  4. Step 4: Simplify right side
    458.35x = 219,805.82
  5. Step 5: Solve for x
    x = 219,805.82/458.35
  6. Step 6: Final answer
    x = 479.56

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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.