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Finding the Fourth Proportional to 515.52, 711.36 and 368.46

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Solution

The fourth proportional to 515.52, 711.36 and 368.46 is: 508.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    515.52 : 711.36 = 368.46 : x
  2. Step 2: Convert to fraction form
    515.52/711.36 = 368.46/x
  3. Step 3: Cross multiply
    515.52x = 711.36 × 368.46
  4. Step 4: Simplify right side
    515.52x = 262,107.71
  5. Step 5: Solve for x
    x = 262,107.71/515.52
  6. Step 6: Final answer
    x = 508.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.