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Finding the Fourth Proportional to 624.02, 861.11 and 348.02

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Solution

The fourth proportional to 624.02, 861.11 and 348.02 is: 480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.02 : 861.11 = 348.02 : x
  2. Step 2: Convert to fraction form
    624.02/861.11 = 348.02/x
  3. Step 3: Cross multiply
    624.02x = 861.11 × 348.02
  4. Step 4: Simplify right side
    624.02x = 299,683.50
  5. Step 5: Solve for x
    x = 299,683.50/624.02
  6. Step 6: Final answer
    x = 480.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.