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Finding the Fourth Proportional to 470.08, 648.70 and 260.25

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Solution

The fourth proportional to 470.08, 648.70 and 260.25 is: 359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.08 : 648.70 = 260.25 : x
  2. Step 2: Convert to fraction form
    470.08/648.70 = 260.25/x
  3. Step 3: Cross multiply
    470.08x = 648.70 × 260.25
  4. Step 4: Simplify right side
    470.08x = 168,819.63
  5. Step 5: Solve for x
    x = 168,819.63/470.08
  6. Step 6: Final answer
    x = 359.13

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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.