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Finding the Fourth Proportional to 294.84, 404.28 and 291.24

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Solution

The fourth proportional to 294.84, 404.28 and 291.24 is: 399.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.84 : 404.28 = 291.24 : x
  2. Step 2: Convert to fraction form
    294.84/404.28 = 291.24/x
  3. Step 3: Cross multiply
    294.84x = 404.28 × 291.24
  4. Step 4: Simplify right side
    294.84x = 117,742.51
  5. Step 5: Solve for x
    x = 117,742.51/294.84
  6. Step 6: Final answer
    x = 399.34

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.