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Finding the Fourth Proportional to 1,150.74, 1,588 and 626.77

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Solution

The fourth proportional to 1,150.74, 1,588 and 626.77 is: 864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.74 : 1,588 = 626.77 : x
  2. Step 2: Convert to fraction form
    1,150.74/1,588 = 626.77/x
  3. Step 3: Cross multiply
    1,150.74x = 1,588 × 626.77
  4. Step 4: Simplify right side
    1,150.74x = 995,310.76
  5. Step 5: Solve for x
    x = 995,310.76/1,150.74
  6. Step 6: Final answer
    x = 864.93

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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.