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Finding the Fourth Proportional to 655.71, 899.01 and 644.01

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Solution

The fourth proportional to 655.71, 899.01 and 644.01 is: 882.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.71 : 899.01 = 644.01 : x
  2. Step 2: Convert to fraction form
    655.71/899.01 = 644.01/x
  3. Step 3: Cross multiply
    655.71x = 899.01 × 644.01
  4. Step 4: Simplify right side
    655.71x = 578,971.43
  5. Step 5: Solve for x
    x = 578,971.43/655.71
  6. Step 6: Final answer
    x = 882.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.