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Finding the Fourth Proportional to 624.04, 861.15 and 358.30

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Solution

The fourth proportional to 624.04, 861.15 and 358.30 is: 494.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.04 : 861.15 = 358.30 : x
  2. Step 2: Convert to fraction form
    624.04/861.15 = 358.30/x
  3. Step 3: Cross multiply
    624.04x = 861.15 × 358.30
  4. Step 4: Simplify right side
    624.04x = 308,544.60
  5. Step 5: Solve for x
    x = 308,544.60/624.04
  6. Step 6: Final answer
    x = 494.43

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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.