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Finding the Fourth Proportional to 467.88, 645.76 and 302.16

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Solution

The fourth proportional to 467.88, 645.76 and 302.16 is: 417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.88 : 645.76 = 302.16 : x
  2. Step 2: Convert to fraction form
    467.88/645.76 = 302.16/x
  3. Step 3: Cross multiply
    467.88x = 645.76 × 302.16
  4. Step 4: Simplify right side
    467.88x = 195,122.84
  5. Step 5: Solve for x
    x = 195,122.84/467.88
  6. Step 6: Final answer
    x = 417.04

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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.