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Finding the Fourth Proportional to 652.31, 900.09 and 372.45

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Solution

The fourth proportional to 652.31, 900.09 and 372.45 is: 513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.31 : 900.09 = 372.45 : x
  2. Step 2: Convert to fraction form
    652.31/900.09 = 372.45/x
  3. Step 3: Cross multiply
    652.31x = 900.09 × 372.45
  4. Step 4: Simplify right side
    652.31x = 335,238.52
  5. Step 5: Solve for x
    x = 335,238.52/652.31
  6. Step 6: Final answer
    x = 513.93

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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.