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Finding the Fourth Proportional to 491.30, 737.27 and 260.09

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Solution

The fourth proportional to 491.30, 737.27 and 260.09 is: 390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.30 : 737.27 = 260.09 : x
  2. Step 2: Convert to fraction form
    491.30/737.27 = 260.09/x
  3. Step 3: Cross multiply
    491.30x = 737.27 × 260.09
  4. Step 4: Simplify right side
    491.30x = 191,755.25
  5. Step 5: Solve for x
    x = 191,755.25/491.30
  6. Step 6: Final answer
    x = 390.30

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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.