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Finding the Fourth Proportional to 374.38, 558.08 and 353.86

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Solution

The fourth proportional to 374.38, 558.08 and 353.86 is: 527.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.38 : 558.08 = 353.86 : x
  2. Step 2: Convert to fraction form
    374.38/558.08 = 353.86/x
  3. Step 3: Cross multiply
    374.38x = 558.08 × 353.86
  4. Step 4: Simplify right side
    374.38x = 197,482.34
  5. Step 5: Solve for x
    x = 197,482.34/374.38
  6. Step 6: Final answer
    x = 527.50

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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.