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Finding the Fourth Proportional to 628.49, 943.65 and 493.02

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Solution

The fourth proportional to 628.49, 943.65 and 493.02 is: 740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.49 : 943.65 = 493.02 : x
  2. Step 2: Convert to fraction form
    628.49/943.65 = 493.02/x
  3. Step 3: Cross multiply
    628.49x = 943.65 × 493.02
  4. Step 4: Simplify right side
    628.49x = 465,238.32
  5. Step 5: Solve for x
    x = 465,238.32/628.49
  6. Step 6: Final answer
    x = 740.24

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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.