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Finding the Fourth Proportional to 488.16, 672.48 and 332.64

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Solution

The fourth proportional to 488.16, 672.48 and 332.64 is: 458.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.16 : 672.48 = 332.64 : x
  2. Step 2: Convert to fraction form
    488.16/672.48 = 332.64/x
  3. Step 3: Cross multiply
    488.16x = 672.48 × 332.64
  4. Step 4: Simplify right side
    488.16x = 223,693.75
  5. Step 5: Solve for x
    x = 223,693.75/488.16
  6. Step 6: Final answer
    x = 458.24

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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.