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Finding the Fourth Proportional to 652.16, 899.64 and 403.39

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Solution

The fourth proportional to 652.16, 899.64 and 403.39 is: 556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.16 : 899.64 = 403.39 : x
  2. Step 2: Convert to fraction form
    652.16/899.64 = 403.39/x
  3. Step 3: Cross multiply
    652.16x = 899.64 × 403.39
  4. Step 4: Simplify right side
    652.16x = 362,906.90
  5. Step 5: Solve for x
    x = 362,906.90/652.16
  6. Step 6: Final answer
    x = 556.47

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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.