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Finding the Fourth Proportional to 1,132.29, 1,563.04 and 690.35

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Solution

The fourth proportional to 1,132.29, 1,563.04 and 690.35 is: 952.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.29 : 1,563.04 = 690.35 : x
  2. Step 2: Convert to fraction form
    1,132.29/1,563.04 = 690.35/x
  3. Step 3: Cross multiply
    1,132.29x = 1,563.04 × 690.35
  4. Step 4: Simplify right side
    1,132.29x = 1,079,044.66
  5. Step 5: Solve for x
    x = 1,079,044.66/1,132.29
  6. Step 6: Final answer
    x = 952.98

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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.