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Finding the Fourth Proportional to 624.03, 931.68 and 550.20

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Solution

The fourth proportional to 624.03, 931.68 and 550.20 is: 821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.03 : 931.68 = 550.20 : x
  2. Step 2: Convert to fraction form
    624.03/931.68 = 550.20/x
  3. Step 3: Cross multiply
    624.03x = 931.68 × 550.20
  4. Step 4: Simplify right side
    624.03x = 512,610.34
  5. Step 5: Solve for x
    x = 512,610.34/624.03
  6. Step 6: Final answer
    x = 821.45

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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.