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Finding the Fourth Proportional to 304.76, 455.76 and 272.50

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Solution

The fourth proportional to 304.76, 455.76 and 272.50 is: 407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.76 : 455.76 = 272.50 : x
  2. Step 2: Convert to fraction form
    304.76/455.76 = 272.50/x
  3. Step 3: Cross multiply
    304.76x = 455.76 × 272.50
  4. Step 4: Simplify right side
    304.76x = 124,193.46
  5. Step 5: Solve for x
    x = 124,193.46/304.76
  6. Step 6: Final answer
    x = 407.51

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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.