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Finding the Fourth Proportional to 603.90, 832.26 and 493.02

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Solution

The fourth proportional to 603.90, 832.26 and 493.02 is: 679.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.90 : 832.26 = 493.02 : x
  2. Step 2: Convert to fraction form
    603.90/832.26 = 493.02/x
  3. Step 3: Cross multiply
    603.90x = 832.26 × 493.02
  4. Step 4: Simplify right side
    603.90x = 410,320.83
  5. Step 5: Solve for x
    x = 410,320.83/603.90
  6. Step 6: Final answer
    x = 679.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.