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Finding the Fourth Proportional to 652.72, 900.42 and 442.90

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Solution

The fourth proportional to 652.72, 900.42 and 442.90 is: 610.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.72 : 900.42 = 442.90 : x
  2. Step 2: Convert to fraction form
    652.72/900.42 = 442.90/x
  3. Step 3: Cross multiply
    652.72x = 900.42 × 442.90
  4. Step 4: Simplify right side
    652.72x = 398,795.48
  5. Step 5: Solve for x
    x = 398,795.48/652.72
  6. Step 6: Final answer
    x = 610.98

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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.