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Finding the Fourth Proportional to 458.72, 632.76 and 383.84

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Solution

The fourth proportional to 458.72, 632.76 and 383.84 is: 529.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.72 : 632.76 = 383.84 : x
  2. Step 2: Convert to fraction form
    458.72/632.76 = 383.84/x
  3. Step 3: Cross multiply
    458.72x = 632.76 × 383.84
  4. Step 4: Simplify right side
    458.72x = 242,878.60
  5. Step 5: Solve for x
    x = 242,878.60/458.72
  6. Step 6: Final answer
    x = 529.47

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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.