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Finding the Fourth Proportional to 655.03, 985.29 and 649.54

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Solution

The fourth proportional to 655.03, 985.29 and 649.54 is: 977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.03 : 985.29 = 649.54 : x
  2. Step 2: Convert to fraction form
    655.03/985.29 = 649.54/x
  3. Step 3: Cross multiply
    655.03x = 985.29 × 649.54
  4. Step 4: Simplify right side
    655.03x = 639,985.27
  5. Step 5: Solve for x
    x = 639,985.27/655.03
  6. Step 6: Final answer
    x = 977.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.