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Finding the Fourth Proportional to 523.84, 787.36 and 511.52

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Solution

The fourth proportional to 523.84, 787.36 and 511.52 is: 768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.84 : 787.36 = 511.52 : x
  2. Step 2: Convert to fraction form
    523.84/787.36 = 511.52/x
  3. Step 3: Cross multiply
    523.84x = 787.36 × 511.52
  4. Step 4: Simplify right side
    523.84x = 402,750.39
  5. Step 5: Solve for x
    x = 402,750.39/523.84
  6. Step 6: Final answer
    x = 768.84

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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.