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Finding the Fourth Proportional to 624.15, 929.79 and 605.03

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Solution

The fourth proportional to 624.15, 929.79 and 605.03 is: 901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.15 : 929.79 = 605.03 : x
  2. Step 2: Convert to fraction form
    624.15/929.79 = 605.03/x
  3. Step 3: Cross multiply
    624.15x = 929.79 × 605.03
  4. Step 4: Simplify right side
    624.15x = 562,546.19
  5. Step 5: Solve for x
    x = 562,546.19/624.15
  6. Step 6: Final answer
    x = 901.30

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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.