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Finding the Fourth Proportional to 491.00, 735.20 and 393.04

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Solution

The fourth proportional to 491.00, 735.20 and 393.04 is: 588.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.00 : 735.20 = 393.04 : x
  2. Step 2: Convert to fraction form
    491.00/735.20 = 393.04/x
  3. Step 3: Cross multiply
    491.00x = 735.20 × 393.04
  4. Step 4: Simplify right side
    491.00x = 288,959.20
  5. Step 5: Solve for x
    x = 288,959.20/491.00
  6. Step 6: Final answer
    x = 588.52

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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.