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Finding the Fourth Proportional to 374.73, 558.14 and 355.22

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Solution

The fourth proportional to 374.73, 558.14 and 355.22 is: 529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.73 : 558.14 = 355.22 : x
  2. Step 2: Convert to fraction form
    374.73/558.14 = 355.22/x
  3. Step 3: Cross multiply
    374.73x = 558.14 × 355.22
  4. Step 4: Simplify right side
    374.73x = 198,260.02
  5. Step 5: Solve for x
    x = 198,260.02/374.73
  6. Step 6: Final answer
    x = 529.08

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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.