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Finding the Fourth Proportional to 974.46, 1,460.88 and 511.95

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Solution

The fourth proportional to 974.46, 1,460.88 and 511.95 is: 767.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.46 : 1,460.88 = 511.95 : x
  2. Step 2: Convert to fraction form
    974.46/1,460.88 = 511.95/x
  3. Step 3: Cross multiply
    974.46x = 1,460.88 × 511.95
  4. Step 4: Simplify right side
    974.46x = 747,897.52
  5. Step 5: Solve for x
    x = 747,897.52/974.46
  6. Step 6: Final answer
    x = 767.50

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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.