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Finding the Fourth Proportional to 349.95, 483.13 and 278.93

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Solution

The fourth proportional to 349.95, 483.13 and 278.93 is: 385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.95 : 483.13 = 278.93 : x
  2. Step 2: Convert to fraction form
    349.95/483.13 = 278.93/x
  3. Step 3: Cross multiply
    349.95x = 483.13 × 278.93
  4. Step 4: Simplify right side
    349.95x = 134,761.01
  5. Step 5: Solve for x
    x = 134,761.01/349.95
  6. Step 6: Final answer
    x = 385.08

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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.