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Finding the Fourth Proportional to 469.85, 648.44 and 260.08

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Solution

The fourth proportional to 469.85, 648.44 and 260.08 is: 358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.85 : 648.44 = 260.08 : x
  2. Step 2: Convert to fraction form
    469.85/648.44 = 260.08/x
  3. Step 3: Cross multiply
    469.85x = 648.44 × 260.08
  4. Step 4: Simplify right side
    469.85x = 168,641.73
  5. Step 5: Solve for x
    x = 168,641.73/469.85
  6. Step 6: Final answer
    x = 358.93

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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.