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Finding the Fourth Proportional to 469.98, 648.63 and 295.32

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Solution

The fourth proportional to 469.98, 648.63 and 295.32 is: 407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.98 : 648.63 = 295.32 : x
  2. Step 2: Convert to fraction form
    469.98/648.63 = 295.32/x
  3. Step 3: Cross multiply
    469.98x = 648.63 × 295.32
  4. Step 4: Simplify right side
    469.98x = 191,553.41
  5. Step 5: Solve for x
    x = 191,553.41/469.98
  6. Step 6: Final answer
    x = 407.58

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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.