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Finding the Fourth Proportional to 1,125.95, 1,554.37 and 706.91

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Solution

The fourth proportional to 1,125.95, 1,554.37 and 706.91 is: 975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.95 : 1,554.37 = 706.91 : x
  2. Step 2: Convert to fraction form
    1,125.95/1,554.37 = 706.91/x
  3. Step 3: Cross multiply
    1,125.95x = 1,554.37 × 706.91
  4. Step 4: Simplify right side
    1,125.95x = 1,098,791.92
  5. Step 5: Solve for x
    x = 1,098,791.92/1,125.95
  6. Step 6: Final answer
    x = 975.88

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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.