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Finding the Fourth Proportional to 973.85, 1,344.83 and 625.15

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Solution

The fourth proportional to 973.85, 1,344.83 and 625.15 is: 863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.85 : 1,344.83 = 625.15 : x
  2. Step 2: Convert to fraction form
    973.85/1,344.83 = 625.15/x
  3. Step 3: Cross multiply
    973.85x = 1,344.83 × 625.15
  4. Step 4: Simplify right side
    973.85x = 840,720.47
  5. Step 5: Solve for x
    x = 840,720.47/973.85
  6. Step 6: Final answer
    x = 863.30

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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.