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Finding the Fourth Proportional to 319.17, 477.48 and 267.51

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Solution

The fourth proportional to 319.17, 477.48 and 267.51 is: 400.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.17 : 477.48 = 267.51 : x
  2. Step 2: Convert to fraction form
    319.17/477.48 = 267.51/x
  3. Step 3: Cross multiply
    319.17x = 477.48 × 267.51
  4. Step 4: Simplify right side
    319.17x = 127,730.67
  5. Step 5: Solve for x
    x = 127,730.67/319.17
  6. Step 6: Final answer
    x = 400.20

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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.