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Finding the Fourth Proportional to 628.84, 940.72 and 591.98

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Solution

The fourth proportional to 628.84, 940.72 and 591.98 is: 885.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.84 : 940.72 = 591.98 : x
  2. Step 2: Convert to fraction form
    628.84/940.72 = 591.98/x
  3. Step 3: Cross multiply
    628.84x = 940.72 × 591.98
  4. Step 4: Simplify right side
    628.84x = 556,887.43
  5. Step 5: Solve for x
    x = 556,887.43/628.84
  6. Step 6: Final answer
    x = 885.58

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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.