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Finding the Fourth Proportional to 451.52, 621.84 and 368.24

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Solution

The fourth proportional to 451.52, 621.84 and 368.24 is: 507.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.52 : 621.84 = 368.24 : x
  2. Step 2: Convert to fraction form
    451.52/621.84 = 368.24/x
  3. Step 3: Cross multiply
    451.52x = 621.84 × 368.24
  4. Step 4: Simplify right side
    451.52x = 228,986.36
  5. Step 5: Solve for x
    x = 228,986.36/451.52
  6. Step 6: Final answer
    x = 507.15

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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.