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Finding the Fourth Proportional to 491.00, 735.59 and 285.19

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Solution

The fourth proportional to 491.00, 735.59 and 285.19 is: 427.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.00 : 735.59 = 285.19 : x
  2. Step 2: Convert to fraction form
    491.00/735.59 = 285.19/x
  3. Step 3: Cross multiply
    491.00x = 735.59 × 285.19
  4. Step 4: Simplify right side
    491.00x = 209,781.79
  5. Step 5: Solve for x
    x = 209,781.79/491.00
  6. Step 6: Final answer
    x = 427.26

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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.