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Finding the Fourth Proportional to 371.51, 554.62 and 330.50

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Solution

The fourth proportional to 371.51, 554.62 and 330.50 is: 493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.51 : 554.62 = 330.50 : x
  2. Step 2: Convert to fraction form
    371.51/554.62 = 330.50/x
  3. Step 3: Cross multiply
    371.51x = 554.62 × 330.50
  4. Step 4: Simplify right side
    371.51x = 183,298.31
  5. Step 5: Solve for x
    x = 183,298.31/371.51
  6. Step 6: Final answer
    x = 493.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.