Home / 1,214.27-1,675.63-690.29

Finding the Fourth Proportional to 1,214.27, 1,675.63 and 690.29

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Solution

The fourth proportional to 1,214.27, 1,675.63 and 690.29 is: 952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.27 : 1,675.63 = 690.29 : x
  2. Step 2: Convert to fraction form
    1,214.27/1,675.63 = 690.29/x
  3. Step 3: Cross multiply
    1,214.27x = 1,675.63 × 690.29
  4. Step 4: Simplify right side
    1,214.27x = 1,156,670.63
  5. Step 5: Solve for x
    x = 1,156,670.63/1,214.27
  6. Step 6: Final answer
    x = 952.56

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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.