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Finding the Fourth Proportional to 655.16, 977.98 and 573.18

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Solution

The fourth proportional to 655.16, 977.98 and 573.18 is: 855.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.16 : 977.98 = 573.18 : x
  2. Step 2: Convert to fraction form
    655.16/977.98 = 573.18/x
  3. Step 3: Cross multiply
    655.16x = 977.98 × 573.18
  4. Step 4: Simplify right side
    655.16x = 560,558.58
  5. Step 5: Solve for x
    x = 560,558.58/655.16
  6. Step 6: Final answer
    x = 855.61

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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.