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Finding the Fourth Proportional to 374.55, 558.06 and 353.60

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Solution

The fourth proportional to 374.55, 558.06 and 353.60 is: 526.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.55 : 558.06 = 353.60 : x
  2. Step 2: Convert to fraction form
    374.55/558.06 = 353.60/x
  3. Step 3: Cross multiply
    374.55x = 558.06 × 353.60
  4. Step 4: Simplify right side
    374.55x = 197,330.02
  5. Step 5: Solve for x
    x = 197,330.02/374.55
  6. Step 6: Final answer
    x = 526.85

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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.