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Finding the Fourth Proportional to 523.20, 722.40 and 368.16

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Solution

The fourth proportional to 523.20, 722.40 and 368.16 is: 508.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.20 : 722.40 = 368.16 : x
  2. Step 2: Convert to fraction form
    523.20/722.40 = 368.16/x
  3. Step 3: Cross multiply
    523.20x = 722.40 × 368.16
  4. Step 4: Simplify right side
    523.20x = 265,958.78
  5. Step 5: Solve for x
    x = 265,958.78/523.20
  6. Step 6: Final answer
    x = 508.33

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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.