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Finding the Fourth Proportional to 374.18, 557.36 and 360.80

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Solution

The fourth proportional to 374.18, 557.36 and 360.80 is: 537.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.18 : 557.36 = 360.80 : x
  2. Step 2: Convert to fraction form
    374.18/557.36 = 360.80/x
  3. Step 3: Cross multiply
    374.18x = 557.36 × 360.80
  4. Step 4: Simplify right side
    374.18x = 201,095.49
  5. Step 5: Solve for x
    x = 201,095.49/374.18
  6. Step 6: Final answer
    x = 537.43

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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.