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Finding the Fourth Proportional to 628.52, 937.04 and 620.40

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Solution

The fourth proportional to 628.52, 937.04 and 620.40 is: 924.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.52 : 937.04 = 620.40 : x
  2. Step 2: Convert to fraction form
    628.52/937.04 = 620.40/x
  3. Step 3: Cross multiply
    628.52x = 937.04 × 620.40
  4. Step 4: Simplify right side
    628.52x = 581,339.62
  5. Step 5: Solve for x
    x = 581,339.62/628.52
  6. Step 6: Final answer
    x = 924.93

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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.