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Finding the Fourth Proportional to 652.05, 899.64 and 386.37

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Solution

The fourth proportional to 652.05, 899.64 and 386.37 is: 533.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.05 : 899.64 = 386.37 : x
  2. Step 2: Convert to fraction form
    652.05/899.64 = 386.37/x
  3. Step 3: Cross multiply
    652.05x = 899.64 × 386.37
  4. Step 4: Simplify right side
    652.05x = 347,593.91
  5. Step 5: Solve for x
    x = 347,593.91/652.05
  6. Step 6: Final answer
    x = 533.08

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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.