Home / 1,216.57-1,825.20-631.89

Finding the Fourth Proportional to 1,216.57, 1,825.20 and 631.89

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Solution

The fourth proportional to 1,216.57, 1,825.20 and 631.89 is: 948.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.57 : 1,825.20 = 631.89 : x
  2. Step 2: Convert to fraction form
    1,216.57/1,825.20 = 631.89/x
  3. Step 3: Cross multiply
    1,216.57x = 1,825.20 × 631.89
  4. Step 4: Simplify right side
    1,216.57x = 1,153,325.63
  5. Step 5: Solve for x
    x = 1,153,325.63/1,216.57
  6. Step 6: Final answer
    x = 948.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.