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Finding the Fourth Proportional to 302.76, 451.55 and 275.22

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Solution

The fourth proportional to 302.76, 451.55 and 275.22 is: 410.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.76 : 451.55 = 275.22 : x
  2. Step 2: Convert to fraction form
    302.76/451.55 = 275.22/x
  3. Step 3: Cross multiply
    302.76x = 451.55 × 275.22
  4. Step 4: Simplify right side
    302.76x = 124,276.28
  5. Step 5: Solve for x
    x = 124,276.28/302.76
  6. Step 6: Final answer
    x = 410.48

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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.