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Finding the Fourth Proportional to 1,153.17, 1,726.52 and 956.34

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Solution

The fourth proportional to 1,153.17, 1,726.52 and 956.34 is: 1,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.17 : 1,726.52 = 956.34 : x
  2. Step 2: Convert to fraction form
    1,153.17/1,726.52 = 956.34/x
  3. Step 3: Cross multiply
    1,153.17x = 1,726.52 × 956.34
  4. Step 4: Simplify right side
    1,153.17x = 1,651,135.36
  5. Step 5: Solve for x
    x = 1,651,135.36/1,153.17
  6. Step 6: Final answer
    x = 1,431.82

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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.