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Finding the Fourth Proportional to 1,266.48, 1,747.62 and 706.91

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Solution

The fourth proportional to 1,266.48, 1,747.62 and 706.91 is: 975.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.48 : 1,747.62 = 706.91 : x
  2. Step 2: Convert to fraction form
    1,266.48/1,747.62 = 706.91/x
  3. Step 3: Cross multiply
    1,266.48x = 1,747.62 × 706.91
  4. Step 4: Simplify right side
    1,266.48x = 1,235,401.32
  5. Step 5: Solve for x
    x = 1,235,401.32/1,266.48
  6. Step 6: Final answer
    x = 975.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.