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Finding the Fourth Proportional to 374.88, 557.40 and 360.30

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Solution

The fourth proportional to 374.88, 557.40 and 360.30 is: 535.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.88 : 557.40 = 360.30 : x
  2. Step 2: Convert to fraction form
    374.88/557.40 = 360.30/x
  3. Step 3: Cross multiply
    374.88x = 557.40 × 360.30
  4. Step 4: Simplify right side
    374.88x = 200,831.22
  5. Step 5: Solve for x
    x = 200,831.22/374.88
  6. Step 6: Final answer
    x = 535.72

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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.