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Finding the Fourth Proportional to 827.93, 1,143.58 and 671.13

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Solution

The fourth proportional to 827.93, 1,143.58 and 671.13 is: 927.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.93 : 1,143.58 = 671.13 : x
  2. Step 2: Convert to fraction form
    827.93/1,143.58 = 671.13/x
  3. Step 3: Cross multiply
    827.93x = 1,143.58 × 671.13
  4. Step 4: Simplify right side
    827.93x = 767,490.85
  5. Step 5: Solve for x
    x = 767,490.85/827.93
  6. Step 6: Final answer
    x = 927.00

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1.5x scale

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.