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Finding the Fourth Proportional to 464.64, 696.48 and 248.16

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Solution

The fourth proportional to 464.64, 696.48 and 248.16 is: 371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.64 : 696.48 = 248.16 : x
  2. Step 2: Convert to fraction form
    464.64/696.48 = 248.16/x
  3. Step 3: Cross multiply
    464.64x = 696.48 × 248.16
  4. Step 4: Simplify right side
    464.64x = 172,838.48
  5. Step 5: Solve for x
    x = 172,838.48/464.64
  6. Step 6: Final answer
    x = 371.98

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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.