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Finding the Fourth Proportional to 470.32, 648.93 and 295.63

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Solution

The fourth proportional to 470.32, 648.93 and 295.63 is: 407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.32 : 648.93 = 295.63 : x
  2. Step 2: Convert to fraction form
    470.32/648.93 = 295.63/x
  3. Step 3: Cross multiply
    470.32x = 648.93 × 295.63
  4. Step 4: Simplify right side
    470.32x = 191,843.18
  5. Step 5: Solve for x
    x = 191,843.18/470.32
  6. Step 6: Final answer
    x = 407.90

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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.