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Finding the Fourth Proportional to 655.88, 979.29 and 651.08

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Solution

The fourth proportional to 655.88, 979.29 and 651.08 is: 972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.88 : 979.29 = 651.08 : x
  2. Step 2: Convert to fraction form
    655.88/979.29 = 651.08/x
  3. Step 3: Cross multiply
    655.88x = 979.29 × 651.08
  4. Step 4: Simplify right side
    655.88x = 637,596.13
  5. Step 5: Solve for x
    x = 637,596.13/655.88
  6. Step 6: Final answer
    x = 972.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.