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Finding the Fourth Proportional to 883.52, 1,218.74 and 573.02

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Solution

The fourth proportional to 883.52, 1,218.74 and 573.02 is: 790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.52 : 1,218.74 = 573.02 : x
  2. Step 2: Convert to fraction form
    883.52/1,218.74 = 573.02/x
  3. Step 3: Cross multiply
    883.52x = 1,218.74 × 573.02
  4. Step 4: Simplify right side
    883.52x = 698,362.39
  5. Step 5: Solve for x
    x = 698,362.39/883.52
  6. Step 6: Final answer
    x = 790.43

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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.