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Finding the Fourth Proportional to 784.73, 1,176.24 and 511.01

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Solution

The fourth proportional to 784.73, 1,176.24 and 511.01 is: 765.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.73 : 1,176.24 = 511.01 : x
  2. Step 2: Convert to fraction form
    784.73/1,176.24 = 511.01/x
  3. Step 3: Cross multiply
    784.73x = 1,176.24 × 511.01
  4. Step 4: Simplify right side
    784.73x = 601,070.40
  5. Step 5: Solve for x
    x = 601,070.40/784.73
  6. Step 6: Final answer
    x = 765.96

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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.