Home / 1,267.37-1,748.80-707.77

Finding the Fourth Proportional to 1,267.37, 1,748.80 and 707.77

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Solution

The fourth proportional to 1,267.37, 1,748.80 and 707.77 is: 976.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.37 : 1,748.80 = 707.77 : x
  2. Step 2: Convert to fraction form
    1,267.37/1,748.80 = 707.77/x
  3. Step 3: Cross multiply
    1,267.37x = 1,748.80 × 707.77
  4. Step 4: Simplify right side
    1,267.37x = 1,237,744.64
  5. Step 5: Solve for x
    x = 1,237,744.64/1,267.37
  6. Step 6: Final answer
    x = 976.62

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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.