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Finding the Fourth Proportional to 647.52, 893.52 and 451.68

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Solution

The fourth proportional to 647.52, 893.52 and 451.68 is: 623.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.52 : 893.52 = 451.68 : x
  2. Step 2: Convert to fraction form
    647.52/893.52 = 451.68/x
  3. Step 3: Cross multiply
    647.52x = 893.52 × 451.68
  4. Step 4: Simplify right side
    647.52x = 403,585.11
  5. Step 5: Solve for x
    x = 403,585.11/647.52
  6. Step 6: Final answer
    x = 623.28

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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.