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Finding the Fourth Proportional to 302.92, 454.35 and 83.57

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Solution

The fourth proportional to 302.92, 454.35 and 83.57 is: 125.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.92 : 454.35 = 83.57 : x
  2. Step 2: Convert to fraction form
    302.92/454.35 = 83.57/x
  3. Step 3: Cross multiply
    302.92x = 454.35 × 83.57
  4. Step 4: Simplify right side
    302.92x = 37,970.03
  5. Step 5: Solve for x
    x = 37,970.03/302.92
  6. Step 6: Final answer
    x = 125.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.