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Finding the Fourth Proportional to 348.94, 524.42 and 345.28

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Solution

The fourth proportional to 348.94, 524.42 and 345.28 is: 518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.94 : 524.42 = 345.28 : x
  2. Step 2: Convert to fraction form
    348.94/524.42 = 345.28/x
  3. Step 3: Cross multiply
    348.94x = 524.42 × 345.28
  4. Step 4: Simplify right side
    348.94x = 181,070.01
  5. Step 5: Solve for x
    x = 181,070.01/348.94
  6. Step 6: Final answer
    x = 518.91

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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.