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Finding the Fourth Proportional to 644.51, 971.53 and 606.88

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Solution

The fourth proportional to 644.51, 971.53 and 606.88 is: 914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.51 : 971.53 = 606.88 : x
  2. Step 2: Convert to fraction form
    644.51/971.53 = 606.88/x
  3. Step 3: Cross multiply
    644.51x = 971.53 × 606.88
  4. Step 4: Simplify right side
    644.51x = 589,604.56
  5. Step 5: Solve for x
    x = 589,604.56/644.51
  6. Step 6: Final answer
    x = 914.81

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.